This character is a Math Symbol and is commonly used, that is, in no specific script. The character is also known as direct product and vector pointing out of page.
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+2299 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 “circled dot operator” for use in screen reading software. It assigns these additional labels, e.g. for search in emoji pickers: circled, dot, operator, XNOR.
The Wikipedia has the following information about this codepoint:
The circled dot, circumpunct, or circle with a point at its centre may refer to one or more of these glyphs or articles
Representations
System
Representation (click value to copy)
Nº
8857
UTF-8
E2 8A 99
UTF-16
22 99
UTF-32
00 00 22 99
URL-Quoted
%E2%8A%99
HTML hex reference
⊙
Wrong windows-1252 Mojibake
⊙
HTML named entity
⊙
HTML named entity
⊙
alias
direct product
alias
vector pointing out of page
Encoding: CP949 (hex bytes)
A2 C1
Encoding: CP950 (hex bytes)
A1 F3
Encoding: EUC_KR (hex bytes)
A2 C1
Encoding: GB2312 (hex bytes)
A1 D1
Encoding: GBK (hex bytes)
A1 D1
Encoding: GB18030 (hex bytes)
A1 D1
Encoding: HZ (hex bytes)
7E 7B 21 51 7E 7D
Encoding: ISO2022_JP_2 (hex bytes)
1B 24 28 43 22 41 1B 28 42
Encoding: ISO2022_KR (hex bytes)
1B 24 29 43 0E 22 41 0F
Encoding: JOHAB (hex bytes)
D9 C1
LATEX
\odot
Adobe Glyph List
circleot
digraph
0.
RFC 5137
\u'2299'
Bash and Zsh inside echo -e
\u2299
C and C++
\u2299
C#
\u2299
CSS
\002299
Excel
=UNICHAR(8857)
Go
\u2299
JavaScript
\u2299
Modern JavaScript since ES6
\u{2299}
JSON
\u2299
Java
\u2299
Lua
\u{2299}
Matlab
char(8857)
Perl
"\x{2299}"
PHP
\u{2299}
PostgreSQL
U&'\2299'
PowerShell
`u{2299}
Python
\u2299
Ruby
\u{2299}
Rust
\u{2299}
Click the star button next to each label to set this representation as favorite or remove it from the favorites. Favorites will be shown initially. (Favorites are stored locally on your computer and never sent over the internet.)