120557918111 has 4 divisors (see below), whose sum is σ = 120558787800. Its totient is φ = 120557048424.

The previous prime is 120557918087. The next prime is 120557918123. The reversal of 120557918111 is 111819755021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120557918111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120557918161) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 175256 + ... + 521373.

It is an arithmetic number, because the mean of its divisors is an integer number (30139696950).

Almost surely, 2^120557918111 is an apocalyptic number.

120557918111 is a deficient number, since it is larger than the sum of its proper divisors (869689).

120557918111 is an equidigital number, since it uses as much as digits as its factorization.

120557918111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869688.

The product of its (nonzero) digits is 25200, while the sum is 41.

The spelling of 120557918111 in words is "one hundred twenty billion, five hundred fifty-seven million, nine hundred eighteen thousand, one hundred eleven".