This character is a Math Symbol and is commonly used, that is, in no specific script.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it acts as Other Neutral. When changing direction it is mirrored into Small Contains As Member. The word that U+220A forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
In mathematics, an element (or member) of a set is any one of the distinct objects that belong to that set. For example, given a set called A containing the first four positive integers (), one could say that "3 is an element of A", expressed notationally as .
Representations
System
Representation (click value to copy)
Nº
8714
UTF-8
E2 88 8A
UTF-16
22 0A
UTF-32
00 00 22 0A
URL-Quoted
%E2%88%8A
HTML hex reference
∊
Wrong windows-1252 Mojibake
∊
Encoding: GB18030 (hex bytes)
81 36 D2 35
RFC 5137
\u'220A'
Bash and Zsh inside echo -e
\u220A
C and C++
\u220A
C#
\u220A
CSS
\00220A
Excel
=UNICHAR(8714)
Go
\u220A
JavaScript
\u220A
Modern JavaScript since ES6
\u{220a}
JSON
\u220A
Java
\u220A
Lua
\u{220A}
Matlab
char(8714)
Perl
"\x{220A}"
PHP
\u{220a}
PostgreSQL
U&'\220A'
PowerShell
`u{220A}
Python
\u220A
Ruby
\u{220a}
Rust
\u{220a}
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