111100122220120 has 64 divisors (see below), whose sum is σ = 272702773094400. Its totient is φ = 40399678058880.

The previous prime is 111100122220097. The next prime is 111100122220177. The reversal of 111100122220120 is 21022221001111.

It is a junction number, because it is equal to n+sod(n) for n = 111100122220094 and 111100122220103.

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, 50023087 + ... + 52196833.

It is an arithmetic number, because the mean of its divisors is an integer number (4260980829600).

Almost surely, 2^{111100122220120} is an apocalyptic number.

111100122220120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111100122220120 is an abundant number, since it is smaller than the sum of its proper divisors (161602650874280).

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

111100122220120 is a wasteful number, since it uses less digits than its factorization.

111100122220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2289928 (or 2289924 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111100122220120 its reverse (21022221001111), we get a palindrome (132122343221231).

The spelling of 111100122220120 in words is "one hundred eleven trillion, one hundred billion, one hundred twenty-two million, two hundred twenty thousand, one hundred twenty".