Code point
U+2AEC
Glyph appearance depends on your fonts.
U+2AEC
SmU+2AEC DOUBLE STROKE NOT SIGN is a Unicode 16.0.0 character in the Math Symbol category. It belongs to the Supplemental Mathematical Operators block.
Choose the representation you need, then copy its value.
U+2AEC
10988
⫬
⫬
⫬
E2 AB AC
2AEC
00002AEC
%E2%AB%AC
\u2AEC
\u2AEC
\u2AEC
\2AEC