113120031112221 has 32 divisors (see below), whose sum is σ = 175532170521600. Its totient is φ = 63458436700800.

The previous prime is 113120031112211. The next prime is 113120031112223. The reversal of 113120031112221 is 122211130021311.

It is not a de Polignac number, because 113120031112221 - 2⁵ = 113120031112189 is a prime.

It is a super-2 number, since 2×113120031112221² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113120031112223) 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, 60856680 + ... + 62687921.

It is an arithmetic number, because the mean of its divisors is an integer number (5485380328800).

Almost surely, 2^{113120031112221} is an apocalyptic number.

It is an amenable number.

113120031112221 is a deficient number, since it is larger than the sum of its proper divisors (62412139409379).

113120031112221 is a wasteful number, since it uses less digits than its factorization.

113120031112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123545409.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 113120031112221 its reverse (122211130021311), we get a palindrome (235331161133532).

The spelling of 113120031112221 in words is "one hundred thirteen trillion, one hundred twenty billion, thirty-one million, one hundred twelve thousand, two hundred twenty-one".