54215111232120 has 64 divisors (see below), whose sum is σ = 162649016893440. Its totient is φ = 14457035600000.

The previous prime is 54215111232089. The next prime is 54215111232137. The reversal of 54215111232120 is 2123211151245.

It is a super-2 number, since 2×54215111232120² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228745 + ... + 10415495.

It is an arithmetic number, because the mean of its divisors is an integer number (2541390888960).

Almost surely, 2^{54215111232120} is an apocalyptic number.

It is an amenable number.

54215111232120 is an abundant number, since it is smaller than the sum of its proper divisors (108433905661320).

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

54215111232120 is a wasteful number, since it uses less digits than its factorization.

54215111232120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10231116 (or 10231112 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

Adding to 54215111232120 its reverse (2123211151245), we get a palindrome (56338322383365).

The spelling of 54215111232120 in words is "fifty-four trillion, two hundred fifteen billion, one hundred eleven million, two hundred thirty-two thousand, one hundred twenty".