This character is a Other Letter and is mainly used in the Hangul script.
The glyph is not a composition. Its East Asian Width is wide. In bidirectional text it is written from left to right. When changing direction it is not mirrored. U+110B forms a Korean syllable block with similar characters, which prevents a line break inside it. The glyph can be confused with 44 other glyphs.
The Wikipedia has the following information about this codepoint:
Ieung (sign: ㅇ; Korean: 이응) is a consonant letter of the Korean alphabet, Hangul. It is silent when used at the beginning of a syllable (it is a consonant placeholder in vowel letters). However, ㅇ might take on the glottal stop [ʔ] sound on some occasions. It takes on the [ŋ] sound when it is the ending consonant in a syllable.
Representations
System
Representation (click value to copy)
Nº
4363
UTF-8
E1 84 8B
UTF-16
11 0B
UTF-32
00 00 11 0B
URL-Quoted
%E1%84%8B
HTML hex reference
ᄋ
Wrong windows-1252 Mojibake
á„‹
Encoding: GB18030 (hex bytes)
81 33 9E 37
RFC 5137
\u'110B'
Bash and Zsh inside echo -e
\u110B
C and C++
\u110B
C#
\u110B
CSS
\00110B
Excel
=UNICHAR(4363)
Go
\u110B
JavaScript
\u110B
Modern JavaScript since ES6
\u{110b}
JSON
\u110B
Java
\u110B
Lua
\u{110B}
Matlab
char(4363)
Perl
"\x{110B}"
PHP
\u{110b}
PostgreSQL
U&'\110B'
PowerShell
`u{110B}
Python
\u110B
Ruby
\u{110b}
Rust
\u{110b}
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