11 (number)

← 10 11 12 →
Cardinaleleven
Ordinal11th
(eleventh)
Numeral systemundecimal
Factorizationprime
Prime5th
Divisors1, 11
Greek numeralΙΑ´
Roman numeralXI
Greek prefixhendeca-/hendeka-
Latin prefixundeca-
Binary10112
Ternary1023
Senary156
Octal138
DuodecimalB12
HexadecimalB16
Bangla১১
Hebrew numeralי"א
Devanagari numerals११
Malayalam൰൧
Tamil numeralsகக
Telugu౧౧
Babylonian numeral𒌋𒐕

11 (eleven) is the natural number following 10 and preceding 12. In English, it is the smallest positive integer whose name has three syllables.