111221202112 has 28 divisors (see below), whose sum is σ = 225837243016. Its totient is φ = 54317329920.

The previous prime is 111221202031. The next prime is 111221202133. The reversal of 111221202112 is 211202122111.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20204589 + ... + 20210092.

It is an arithmetic number, because the mean of its divisors is an integer number (8065615822).

Almost surely, 2^111221202112 is an apocalyptic number.

It is an amenable number.

111221202112 is an abundant number, since it is smaller than the sum of its proper divisors (114616040904).

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

111221202112 is an equidigital number, since it uses as much as digits as its factorization.

111221202112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40414736 (or 40414726 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111221202112 its reverse (211202122111), we get a palindrome (322423324223).

The spelling of 111221202112 in words is "one hundred eleven billion, two hundred twenty-one million, two hundred two thousand, one hundred twelve".