Number 11 in British English words is eleven.
Number consists of 2 digits, two-digit.

Number 11 in American English words is eleven, in German words is elf, in French words is onze, in Spanish words is once, in Italian words is undici, in Dutch words is elf, in Danish words is elleve.
If you want to write in words the number 11, it is necessary to use 6 characters.

Number 11 in binary code can be written 1011.

Number 11 in octal code can be written 13.

Number 11 in hexadecimal code can be written B.

Number 11 in Roman numerals is XI.

Unix timestamp 11 converted to human readable date and time is Thursday January 1, 1970, 3:00 AM.

Decimal IP address 11 converted to dotted-decimal format is 0.0.0.11.

The square root of 11 is 3.3166247903554.
Number 11 multiplied by 2 equals 22.
Divided by 2 equals 5.5.
The sum of all digits equals 2.
Number 11 raised to the power of 2 is 121.
Number 11 raised to the power of 3 is 1331.

The cosine of number 11 is 0.0044256979880508.
The sine of number 11 is -0.9999902065507.
The tangent of number 11 is -225.9508464542.
The radian equivalent of number 11 is 0.19198621771938.
The equivalent of number 11 in degrees is 630.25357464391.
The base-10 logarithm of number 11 is 1.0413926851582.

This number is odd number (an integer that is not evenly divisible by 2).
Number 11 is prime number, a natural number greater than 1 that has no positive divisors other than 1 and itself.