113112051213 has 16 divisors (see below), whose sum is σ = 172378644480. Its totient is φ = 64628924016.

The previous prime is 113112051137. The next prime is 113112051223. The reversal of 113112051213 is 312150211311.

It is not a de Polignac number, because 113112051213 - 2²⁰ = 113111002637 is a prime.

It is a super-2 number, since 2×113112051213² (a number of 23 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 113112051213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113112051223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55545 + ... + 478862.

It is an arithmetic number, because the mean of its divisors is an integer number (10773665280).

Almost surely, 2^113112051213 is an apocalyptic number.

It is an amenable number.

113112051213 is a deficient number, since it is larger than the sum of its proper divisors (59266593267).

113112051213 is a wasteful number, since it uses less digits than its factorization.

113112051213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544496.

The product of its (nonzero) digits is 180, while the sum is 21.

Adding to 113112051213 its reverse (312150211311), we get a palindrome (425262262524).

The spelling of 113112051213 in words is "one hundred thirteen billion, one hundred twelve million, fifty-one thousand, two hundred thirteen".