This character is a Other Number and is commonly used, that is, in no specific script. It is also used in the scripts Cypriot syllabary, Linear A, Linear B. The codepoint has the numeric value 90.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it is written from left to right. When changing direction it is not mirrored. The word that U+10118 forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
Aegean numbers was an additive sign-value numeral system used by the Minoan and Mycenaean civilizations. They are attested in the Linear A and Linear B scripts. They may have survived in the Cypro-Minoan script, where a single sign with "100" value is attested so far on a large clay tablet from Enkomi.
Representations
System
Representation (click value to copy)
NΒΊ
65816
UTF-8
F0 90 84 98
UTF-16
D8 00 DD 18
UTF-32
00 01 01 18
URL-Quoted
%F0%90%84%98
HTML hex reference
𐄘
Wrong windows-1252 Mojibake
Γ°ΒβΛ
Encoding: GB18030 (hex bytes)
90 30 9D 30
RFC 5137
\u'10118'
Bash and Zsh inside echo -e
\U00010118
C and C++
\U00010118
C#
\U00010118
CSS
\010118
Excel
=UNICHAR(65816)
Go
\U00010118
JavaScript
\uD800\uDD18
Modern JavaScript since ES6
\u{10118}
JSON
\uD800\uDD18
Java
\uD800\uDD18
Lua
\u{10118}
Matlab
char(65816)
Perl
"\x{10118}"
PHP
\u{10118}
PostgreSQL
U&'\+010118'
PowerShell
`u{10118}
Python
\U00010118
Ruby
\u{10118}
Rust
\u{10118}
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