This character is a Other Letter and is mainly used in the Javanese 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. U+A99A forms an orthographic syllable in Brahmic scripts with similar characters, which prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
ꦚ is one of syllable in Javanese script that represent the sound /ɲɔ/, /ɲa/. It is transliterated to Latin as "nya", and sometimes in Indonesian orthography as "nyo". It has another form (pasangan), which is ◌꧀ꦚ, but represented by a single Unicode code point, U+A99A.
Representations
System
Representation (click value to copy)
Nº
43418
UTF-8
EA A6 9A
UTF-16
A9 9A
UTF-32
00 00 A9 9A
URL-Quoted
%EA%A6%9A
HTML hex reference
ꦚ
Wrong windows-1252 Mojibake
ꦚ
Encoding: GB18030 (hex bytes)
82 37 92 31
RFC 5137
\u'A99A'
Bash and Zsh inside echo -e
\uA99A
C and C++
\uA99A
C#
\uA99A
CSS
\00A99A
Excel
=UNICHAR(43418)
Go
\uA99A
JavaScript
\uA99A
Modern JavaScript since ES6
\u{a99a}
JSON
\uA99A
Java
\uA99A
Lua
\u{A99A}
Matlab
char(43418)
Perl
"\x{A99A}"
PHP
\u{a99a}
PostgreSQL
U&'\A99A'
PowerShell
`u{A99A}
Python
\uA99A
Ruby
\u{a99a}
Rust
\u{a99a}
Click the star button next to each label to set this representation as favorite or remove it from the favorites. Favorites will be shown initially. (Favorites are stored locally on your computer and never sent over the internet.)