111220012122 has 32 divisors (see below), whose sum is σ = 224373082752. Its totient is φ = 36751908864.

The previous prime is 111220012117. The next prime is 111220012151. The reversal of 111220012122 is 221210022111.

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, 504538 + ... + 690650.

It is an arithmetic number, because the mean of its divisors is an integer number (7011658836).

Almost surely, 2^111220012122 is an apocalyptic number.

111220012122 is an abundant number, since it is smaller than the sum of its proper divisors (113153070630).

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

111220012122 is a wasteful number, since it uses less digits than its factorization.

111220012122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186982.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111220012122 its reverse (221210022111), we get a palindrome (332430034233).

The spelling of 111220012122 in words is "one hundred eleven billion, two hundred twenty million, twelve thousand, one hundred twenty-two".