111221101122111 has 24 divisors (see below), whose sum is σ = 166628277139584. Its totient is φ = 71429125665600.

The previous prime is 111221101122059. The next prime is 111221101122113.

111221101122111 is a `hidden beast` number, since 111 + 221 + 10 + 112 + 211 + 1 = 666.

111221101122111 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 111221101122111 - 2²² = 111221096927807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111221101122113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1653418351 + ... + 1653485616.

It is an arithmetic number, because the mean of its divisors is an integer number (6942844880816).

Almost surely, 2^{111221101122111} is an apocalyptic number.

111221101122111 is a deficient number, since it is larger than the sum of its proper divisors (55407176017473).

111221101122111 is a wasteful number, since it uses less digits than its factorization.

111221101122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3306904111 (or 3306904108 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 18.

It can be divided in two parts, 11122110 and 1122111, that added together give a palindrome (12244221).

The spelling of 111221101122111 in words is "one hundred eleven trillion, two hundred twenty-one billion, one hundred one million, one hundred twenty-two thousand, one hundred eleven".