113012221021 has 32 divisors (see below), whose sum is σ = 139566924288. Its totient is φ = 89417053440.

The previous prime is 113012220983. The next prime is 113012221037. The reversal of 113012221021 is 120122210311.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113012221021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113012220986 and 113012221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113012221081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 411955 + ... + 629071.

It is an arithmetic number, because the mean of its divisors is an integer number (4361466384).

Almost surely, 2^113012221021 is an apocalyptic number.

It is an amenable number.

113012221021 is a deficient number, since it is larger than the sum of its proper divisors (26554703267).

113012221021 is a wasteful number, since it uses less digits than its factorization.

113012221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217261.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 113012221021 its reverse (120122210311), we get a palindrome (233134431332).

It can be divided in two parts, 11301 and 2221021, that added together give a palindrome (2232322).

The spelling of 113012221021 in words is "one hundred thirteen billion, twelve million, two hundred twenty-one thousand, twenty-one".