Undefined Character (U+11866)

Plane:	Supplementary Multilingual Plane, U+10000 - U+1FFFF^[1]
HTML Entity:	`𑡦` `𑡦`
UTF-8 Encoding:	`0xF0 0x91 0xA1 0xA6`
UTF-16 Encoding:	`0xD806 0xDC66`
UTF-32 Encoding:	`0x00011866`

References