113311112021 has 2 divisors, whose sum is σ = 113311112022. Its totient is φ = 113311112020.

The previous prime is 113311112011. The next prime is 113311112069. The reversal of 113311112021 is 120211113311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109200507025 + 4110604996 = 330455^2 + 64114^2 .

It is a cyclic number.

It is not a de Polignac number, because 113311112021 - 2⁶ = 113311111957 is a prime.

It is a super-2 number, since 2×113311112021² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113311112011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56655556010 + 56655556011.

It is an arithmetic number, because the mean of its divisors is an integer number (56655556011).

Almost surely, 2^113311112021 is an apocalyptic number.

It is an amenable number.

113311112021 is a deficient number, since it is larger than the sum of its proper divisors (1).

113311112021 is an equidigital number, since it uses as much as digits as its factorization.

113311112021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 113311112021 its reverse (120211113311), we get a palindrome (233522225332).

The spelling of 113311112021 in words is "one hundred thirteen billion, three hundred eleven million, one hundred twelve thousand, twenty-one".