320112302220 has 36 divisors (see below), whose sum is σ = 971007317280. Its totient is φ = 85363280544.

The previous prime is 320112302197. The next prime is 320112302231. The reversal of 320112302220 is 22203211023.

320112302220 is a `hidden beast` number, since 32 + 0 + 112 + 302 + 220 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×320112302220³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 320112302193 and 320112302202.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 889200660 + ... + 889201019.

It is an arithmetic number, because the mean of its divisors is an integer number (26972425480).

Almost surely, 2^320112302220 is an apocalyptic number.

320112302220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320112302220 is an abundant number, since it is smaller than the sum of its proper divisors (650895015060).

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

320112302220 is a wasteful number, since it uses less digits than its factorization.

320112302220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778401694 (or 1778401689 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 320112302220 its reverse (22203211023), we get a palindrome (342315513243).

The spelling of 320112302220 in words is "three hundred twenty billion, one hundred twelve million, three hundred two thousand, two hundred twenty".