This character is a Other Letter and is mainly used in the Limbu script.
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+1911 forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
The Limbu script (also Sirijanga script) is used to write the Limbu language. It is a Brahmic type abugida.
Representations
System
Representation (click value to copy)
Nº
6417
UTF-8
E1 A4 91
UTF-16
19 11
UTF-32
00 00 19 11
URL-Quoted
%E1%A4%91
HTML hex reference
ᤑ
Wrong windows-1252 Mojibake
ᤑ
Encoding: GB18030 (hex bytes)
81 34 EE 31
RFC 5137
\u'1911'
Bash and Zsh inside echo -e
\u1911
C and C++
\u1911
C#
\u1911
CSS
\001911
Excel
=UNICHAR(6417)
Go
\u1911
JavaScript
\u1911
Modern JavaScript since ES6
\u{1911}
JSON
\u1911
Java
\u1911
Lua
\u{1911}
Matlab
char(6417)
Perl
"\x{1911}"
PHP
\u{1911}
PostgreSQL
U&'\1911'
PowerShell
`u{1911}
Python
\u1911
Ruby
\u{1911}
Rust
\u{1911}
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