Undefined Character (U+13B21)

Plane:	Supplementary Multilingual Plane, U+10000 - U+1FFFF^[1]
HTML Entity:	`𓬡` `𓬡`
UTF-8 Encoding:	`0xF0 0x93 0xAC 0xA1`
UTF-16 Encoding:	`0xD80E 0xDF21`
UTF-32 Encoding:	`0x00013B21`

References