111100220121200 has 30 divisors (see below), whose sum is σ = 266918278842144. Its totient is φ = 44440088048320.

The previous prime is 111100220121199. The next prime is 111100220121221. The reversal of 111100220121200 is 2121022001111.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 138875274752 + ... + 138875275551.

Almost surely, 2^{111100220121200} is an apocalyptic number.

111100220121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111100220121200 is an abundant number, since it is smaller than the sum of its proper divisors (155818058720944).

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

111100220121200 is a wasteful number, since it uses less digits than its factorization.

111100220121200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277750550321 (or 277750550310 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111100220121200 its reverse (2121022001111), we get a palindrome (113221242122311).

The spelling of 111100220121200 in words is "one hundred eleven trillion, one hundred billion, two hundred twenty million, one hundred twenty-one thousand, two hundred".