Undefined Character (U+11FF9)

Block:	Tamil Supplement, U+11FC0 - U+11FFF^[1]
Plane:	Supplementary Multilingual Plane, U+10000 - U+1FFFF^[1]
HTML Entity:	`𑿹` `𑿹`
UTF-8 Encoding:	`0xF0 0x91 0xBF 0xB9`
UTF-16 Encoding:	`0xD807 0xDFF9`
UTF-32 Encoding:	`0x00011FF9`

References