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 Equal To Or Precedes. The word that U+22DF forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
In mathematical notation, ordered set operators indicate whether an object precedes or succeeds another. These relationship operators are denoted by the unicode symbols U+227A-F, along with symbols located unicode blocks U+228x through U+22Ex.
Representations
System
Representation (click value to copy)
Nº
8927
UTF-8
E2 8B 9F
UTF-16
22 DF
UTF-32
00 00 22 DF
URL-Quoted
%E2%8B%9F
HTML hex reference
⋟
Wrong windows-1252 Mojibake
â‹Ÿ
HTML named entity
⋟
HTML named entity
⋟
Encoding: GB18030 (hex bytes)
81 36 E4 32
LATEX
\curlyeqsucc
RFC 5137
\u'22DF'
Bash and Zsh inside echo -e
\u22DF
C and C++
\u22DF
C#
\u22DF
CSS
\0022DF
Excel
=UNICHAR(8927)
Go
\u22DF
JavaScript
\u22DF
Modern JavaScript since ES6
\u{22df}
JSON
\u22DF
Java
\u22DF
Lua
\u{22DF}
Matlab
char(8927)
Perl
"\x{22DF}"
PHP
\u{22df}
PostgreSQL
U&'\22DF'
PowerShell
`u{22DF}
Python
\u22DF
Ruby
\u{22df}
Rust
\u{22df}
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