21113011133933 has 2 divisors, whose sum is σ = 21113011133934. Its totient is φ = 21113011133932.

The previous prime is 21113011133917. The next prime is 21113011133941. The reversal of 21113011133933 is 33933111031112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19029024399529 + 2083986734404 = 4362227^2 + 1443602^2 .

It is a cyclic number.

It is not a de Polignac number, because 21113011133933 - 2⁴ = 21113011133917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21113011133933.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21113011433933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556505566966 + 10556505566967.

It is an arithmetic number, because the mean of its divisors is an integer number (10556505566967).

Almost surely, 2^{21113011133933} is an apocalyptic number.

It is an amenable number.

21113011133933 is a deficient number, since it is larger than the sum of its proper divisors (1).

21113011133933 is an equidigital number, since it uses as much as digits as its factorization.

21113011133933 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 32.

The spelling of 21113011133933 in words is "twenty-one trillion, one hundred thirteen billion, eleven million, one hundred thirty-three thousand, nine hundred thirty-three".