111122120121100 has 108 divisors (see below), whose sum is σ = 267673468207824. Its totient is φ = 40007963600000.

The previous prime is 111122120121083. The next prime is 111122120121113. The reversal of 111122120121100 is 1121021221111.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 44241496 + ... + 46685695.

Almost surely, 2^{111122120121100} is an apocalyptic number.

111122120121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111122120121100 is an abundant number, since it is smaller than the sum of its proper divisors (156551348086724).

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

111122120121100 is a wasteful number, since it uses less digits than its factorization.

111122120121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90927328 (or 90927310 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 111122120121100 its reverse (1121021221111), we get a palindrome (112243141342211).

The spelling of 111122120121100 in words is "one hundred eleven trillion, one hundred twenty-two billion, one hundred twenty million, one hundred twenty-one thousand, one hundred".