113312121321 has 32 divisors (see below), whose sum is σ = 182115440640. Its totient is φ = 61219839744.

The previous prime is 113312121313. The next prime is 113312121331. The reversal of 113312121321 is 123121213311.

It is not a de Polignac number, because 113312121321 - 2³ = 113312121313 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (113312121331) 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, 81600 + ... + 482993.

It is an arithmetic number, because the mean of its divisors is an integer number (5691107520).

Almost surely, 2^113312121321 is an apocalyptic number.

It is an amenable number.

113312121321 is a deficient number, since it is larger than the sum of its proper divisors (68803319319).

113312121321 is a wasteful number, since it uses less digits than its factorization.

113312121321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565125.

The product of its digits is 216, while the sum is 21.

Adding to 113312121321 its reverse (123121213311), we get a palindrome (236433334632).

The spelling of 113312121321 in words is "one hundred thirteen billion, three hundred twelve million, one hundred twenty-one thousand, three hundred twenty-one".