111021122012120 has 64 divisors (see below), whose sum is σ = 257857238073600. Its totient is φ = 42975630051840.

The previous prime is 111021122012107. The next prime is 111021122012137. The reversal of 111021122012120 is 21210221120111.

It is a congruent number.

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, 342719186 + ... + 343042974.

It is an arithmetic number, because the mean of its divisors is an integer number (4029019344900).

Almost surely, 2^{111021122012120} is an apocalyptic number.

111021122012120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111021122012120 is an abundant number, since it is smaller than the sum of its proper divisors (146836116061480).

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

111021122012120 is a wasteful number, since it uses less digits than its factorization.

111021122012120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600348 (or 600344 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111021122012120 its reverse (21210221120111), we get a palindrome (132231343132231).

The spelling of 111021122012120 in words is "one hundred eleven trillion, twenty-one billion, one hundred twenty-two million, twelve thousand, one hundred twenty".