111221013112 has 32 divisors (see below), whose sum is σ = 240879737520. Its totient is φ = 47581181440.

The previous prime is 111221013097. The next prime is 111221013139. The reversal of 111221013112 is 211310122111.

It is a happy number.

It is a super-2 number, since 2×111221013112² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 37171303 + ... + 37174294.

Almost surely, 2^111221013112 is an apocalyptic number.

It is an amenable number.

111221013112 is an abundant number, since it is smaller than the sum of its proper divisors (129658724408).

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

111221013112 is a wasteful number, since it uses less digits than its factorization.

111221013112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74345631 (or 74345627 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 111221013112 its reverse (211310122111), we get a palindrome (322531135223).

The spelling of 111221013112 in words is "one hundred eleven billion, two hundred twenty-one million, thirteen thousand, one hundred twelve".