231520002222120 has 64 divisors (see below), whose sum is σ = 704342541997440. Its totient is φ = 60869108563200.

The previous prime is 231520002221957. The next prime is 231520002222137. The reversal of 231520002222120 is 21222200025132.

It is a super-2 number, since 2×231520002222120² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13586846071 + ... + 13586863110.

It is an arithmetic number, because the mean of its divisors is an integer number (11005352218710).

Almost surely, 2^{231520002222120} is an apocalyptic number.

231520002222120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231520002222120 is an abundant number, since it is smaller than the sum of its proper divisors (472822539775320).

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

231520002222120 is a wasteful number, since it uses less digits than its factorization.

231520002222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27173709266 (or 27173709262 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 231520002222120 its reverse (21222200025132), we get a palindrome (252742202247252).

The spelling of 231520002222120 in words is "two hundred thirty-one trillion, five hundred twenty billion, two million, two hundred twenty-two thousand, one hundred twenty".