111221101222122 has 32 divisors (see below), whose sum is σ = 228455610120000. Its totient is φ = 36071478569088.

The previous prime is 111221101222111. The next prime is 111221101222141. The reversal of 111221101222122 is 221222101122111.

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, 35215629 + ... + 38243727.

It is an arithmetic number, because the mean of its divisors is an integer number (7139237816250).

Almost surely, 2^{111221101222122} is an apocalyptic number.

111221101222122 is an abundant number, since it is smaller than the sum of its proper divisors (117234508897878).

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

111221101222122 is a wasteful number, since it uses less digits than its factorization.

111221101222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3193590.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 111221101222122 its reverse (221222101122111), we get a palindrome (332443202344233).

The spelling of 111221101222122 in words is "one hundred eleven trillion, two hundred twenty-one billion, one hundred one million, two hundred twenty-two thousand, one hundred twenty-two".