320121013020 has 24 divisors (see below), whose sum is σ = 896338836624. Its totient is φ = 85365603456.

The previous prime is 320121013007. The next prime is 320121013031. The reversal of 320121013020 is 20310121023.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2667675049 + ... + 2667675168.

It is an arithmetic number, because the mean of its divisors is an integer number (37347451526).

Almost surely, 2^320121013020 is an apocalyptic number.

320121013020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320121013020 is an abundant number, since it is smaller than the sum of its proper divisors (576217823604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320121013020 is a wasteful number, since it uses less digits than its factorization.

320121013020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5335350229 (or 5335350227 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 320121013020 its reverse (20310121023), we get a palindrome (340431134043).

The spelling of 320121013020 in words is "three hundred twenty billion, one hundred twenty-one million, thirteen thousand, twenty".