111110212122 has 64 divisors (see below), whose sum is σ = 280894059264. Its totient is φ = 28511792640.

The previous prime is 111110212111. The next prime is 111110212181. The reversal of 111110212122 is 221212011111.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2729779 + ... + 2770182.

It is an arithmetic number, because the mean of its divisors is an integer number (4388969676).

Almost surely, 2^111110212122 is an apocalyptic number.

111110212122 is an abundant number, since it is smaller than the sum of its proper divisors (169783847142).

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

111110212122 is a wasteful number, since it uses less digits than its factorization.

111110212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5500023.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111110212122 its reverse (221212011111), we get a palindrome (332322223233).

The spelling of 111110212122 in words is "one hundred eleven billion, one hundred ten million, two hundred twelve thousand, one hundred twenty-two".