320200012020120 has 128 divisors (see below), whose sum is σ = 978965139810240. Its totient is φ = 83761721763840.

The previous prime is 320200012020047. The next prime is 320200012020131. The reversal of 320200012020120 is 21020210002023.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 320200012020120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55906599 + ... + 61367318.

Almost surely, 2^{320200012020120} is an apocalyptic number.

320200012020120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320200012020120 is an abundant number, since it is smaller than the sum of its proper divisors (658765127790120).

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

320200012020120 is a wasteful number, since it uses less digits than its factorization.

320200012020120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117274365 (or 117274361 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 320200012020120 its reverse (21020210002023), we get a palindrome (341220222022143).

The spelling of 320200012020120 in words is "three hundred twenty trillion, two hundred billion, twelve million, twenty thousand, one hundred twenty".