Twelve thousand eight hundred twenty one
12821 is an odd number.
12821 is a prime number, which means it is only divisible by 1 and itself.
12821 is a palindrome.
12821 is a Sophie Germain prime, which means that 2 x 12821 + 1 = 25643 is also a prime number.
In binary, 12821 is represented as 11001000010101.
In hex, 12821 is represented as 3215.
Prime factorization of 12821: 12821.