2331111232120 has 64 divisors (see below), whose sum is σ = 5906393303040. Its totient is φ = 820332393600.

The previous prime is 2331111232103. The next prime is 2331111232127. The reversal of 2331111232120 is 212321111332.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 2331111232091 and 2331111232100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331111232127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85437652 + ... + 85464931.

It is an arithmetic number, because the mean of its divisors is an integer number (92287395360).

Almost surely, 2^{2331111232120} is an apocalyptic number.

2331111232120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2331111232120 is an abundant number, since it is smaller than the sum of its proper divisors (3575282070920).

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

2331111232120 is a wasteful number, since it uses less digits than its factorization.

2331111232120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170902636 (or 170902632 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 2331111232120 its reverse (212321111332), we get a palindrome (2543432343452).

The spelling of 2331111232120 in words is "two trillion, three hundred thirty-one billion, one hundred eleven million, two hundred thirty-two thousand, one hundred twenty".