111111202112122 has 16 divisors (see below), whose sum is σ = 168224903809920. Its totient is φ = 55036237058208.

The previous prime is 111111202112039. The next prime is 111111202112143. The reversal of 111111202112122 is 221211202111111.

It is a self number, because there is not a number n which added to its sum of digits gives 111111202112122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151780078 + ... + 152510374.

It is an arithmetic number, because the mean of its divisors is an integer number (10514056488120).

Almost surely, 2^{111111202112122} is an apocalyptic number.

111111202112122 is a deficient number, since it is larger than the sum of its proper divisors (57113701697798).

111111202112122 is a wasteful number, since it uses less digits than its factorization.

111111202112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441365.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 111111202112122 its reverse (221211202111111), we get a palindrome (332322404223233).

The spelling of 111111202112122 in words is "one hundred eleven trillion, one hundred eleven billion, two hundred two million, one hundred twelve thousand, one hundred twenty-two".