320113021121 has 32 divisors (see below), whose sum is σ = 350836738560. Its totient is φ = 290894708736.

The previous prime is 320113021093. The next prime is 320113021177. The reversal of 320113021121 is 121120311023.

It is a cyclic number.

It is not a de Polignac number, because 320113021121 - 2²⁶ = 320045912257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320113021121.

It is not an unprimeable number, because it can be changed into a prime (320113020121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50994635 + ... + 51000911.

It is an arithmetic number, because the mean of its divisors is an integer number (10963648080).

Almost surely, 2^320113021121 is an apocalyptic number.

It is an amenable number.

320113021121 is a deficient number, since it is larger than the sum of its proper divisors (30723717439).

320113021121 is a wasteful number, since it uses less digits than its factorization.

320113021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7193.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 320113021121 its reverse (121120311023), we get a palindrome (441233332144).

The spelling of 320113021121 in words is "three hundred twenty billion, one hundred thirteen million, twenty-one thousand, one hundred twenty-one".