113239933021 has 2 divisors, whose sum is σ = 113239933022. Its totient is φ = 113239933020.

The previous prime is 113239932979. The next prime is 113239933031. The reversal of 113239933021 is 120339932311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113088273796 + 151659225 = 336286^2 + 12315^2 .

It is a cyclic number.

It is not a de Polignac number, because 113239933021 - 2²⁵ = 113206378589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113239933031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56619966510 + 56619966511.

It is an arithmetic number, because the mean of its divisors is an integer number (56619966511).

Almost surely, 2^113239933021 is an apocalyptic number.

It is an amenable number.

113239933021 is a deficient number, since it is larger than the sum of its proper divisors (1).

113239933021 is an equidigital number, since it uses as much as digits as its factorization.

113239933021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 37.

The spelling of 113239933021 in words is "one hundred thirteen billion, two hundred thirty-nine million, nine hundred thirty-three thousand, twenty-one".