Code point
U+229A
Glyph appearance depends on your fonts.
U+229A
SmU+229A CIRCLED RING OPERATOR is a Unicode 16.0.0 character in the Math Symbol category. It belongs to the Mathematical Operators block.
Choose the representation you need, then copy its value.
U+229A
8858
⊚
⊚
⊚
E2 8A 9A
229A
0000229A
%E2%8A%9A
\u229A
\u229A
\u229A
\229A