111221101100 has 36 divisors (see below), whose sum is σ = 241365999504. Its totient is φ = 44485452480.

The previous prime is 111221101093. The next prime is 111221101133. The reversal of 111221101100 is 1101122111.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2026217 + ... + 2080383.

Almost surely, 2^111221101100 is an apocalyptic number.

111221101100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111221101100 is an abundant number, since it is smaller than the sum of its proper divisors (130144898404).

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

111221101100 is a wasteful number, since it uses less digits than its factorization.

111221101100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74714 (or 74707 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 111221101100 its reverse (1101122111), we get a palindrome (112322223211).

The spelling of 111221101100 in words is "one hundred eleven billion, two hundred twenty-one million, one hundred one thousand, one hundred".