U+221E Infinity
U+221E was added in Unicode version 1.1 in 1993. It belongs to the block
This character is a Math Symbol and is commonly used, that is, in no specific script.
The glyph is not a composition. Its width in East Asian texts is determined by its context. It can be displayed wide or narrow. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. If its East Asian Width is “narrow”, U+221E forms a word with similar characters, which prevents a line break inside it. Otherwise it allows line breaks around it, except in some numeric contexts. The glyph can be confused with one other glyph.
The CLDR project calls this character “infinity sign” for use in screen reading software. It assigns these additional labels, e.g. for search in emoji pickers: infinity.
The Wikipedia has the following information about this codepoint:
The infinity symbol (∞) is a mathematical symbol representing the concept of infinity. This symbol is also called a lemniscate, after the lemniscate curves of a similar shape studied in algebraic geometry, or "lazy eight", in the terminology of livestock branding.
This symbol was first used mathematically by John Wallis in the 17th century, although it has a longer history of other uses. In mathematics, it often refers to infinite processes (potential infinity) rather than infinite values (actual infinity). It has other related technical meanings, such as the use of longlasting paper in bookbinding, and has been used for its symbolic value of the infinite in modern mysticism and literature. It is a common element of graphic design, for instance in corporate logos as well as in older designs such as the Métis flag.
Both the infinity symbol itself and several variations of the symbol are available in various character encodings.
Representations
System  Representation 

Nº  8734 
UTF8  E2 88 9E 
UTF16  22 1E 
UTF32  00 00 22 1E 
URLQuoted  %E2%88%9E 
HTML hex reference  ∞ 
Wrong windows1252 Mojibake  âˆž 
HTML named entity  ∞ 
Encoding: EUCKR (hex bytes)  A1 C4 
Encoding: JIS0208 (hex bytes)  A1 E7 
Encoding: MACINTOSH (hex bytes)  B0 
Encoding: XMACCYRILLIC (hex bytes)  B0 
L^{A}T_{E}X  \infty 
AGL: Latin2  infinity 
AGL: Latin3  infinity 
AGL: Latin4  infinity 
AGL: Latin5  infinity 
Adobe Glyph List  infinity 
digraph  00 
Related Characters
Confusables
Elsewhere
Complete Record
Property  Value 

1.1 (1993)  
INFINITY  
—  
Mathematical Operators  
Math Symbol  
Common  
Other Neutral  
Not Reordered  
none  


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✘  
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Any  
✔  
✘  
✘  
✘  
✘  
✘  
✘  
✘  
✘  
0  
1  
1  
✘  
None  
—  
NA  
Other  
—  
✘  
✘  
✔  
✘  
Yes  
Yes  


Yes  


Yes  
✘  
✘  
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✘  
✘  
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✔  
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Other  
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Other  
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✘  
✘  


None  
ambiguous  
Not Applicable  
—  
No_Joining_Group  
Non Joining  
Ambiguous (Alphabetic or Ideographic)  
none  
not a number  


U 