111122213120 has 72 divisors (see below), whose sum is σ = 274758731520. Its totient is φ = 43015034880.

The previous prime is 111122213077. The next prime is 111122213159. The reversal of 111122213120 is 21312221111.

It is a happy 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, 1360550 + ... + 1439909.

Almost surely, 2^111122213120 is an apocalyptic number.

111122213120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111122213120 is an abundant number, since it is smaller than the sum of its proper divisors (163636518400).

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

111122213120 is an equidigital number, since it uses as much as digits as its factorization.

111122213120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2800511 (or 2800497 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 111122213120 its reverse (21312221111), we get a palindrome (132434434231).

The spelling of 111122213120 in words is "one hundred eleven billion, one hundred twenty-two million, two hundred thirteen thousand, one hundred twenty".