111210121120 has 48 divisors (see below), whose sum is σ = 300267330048. Its totient is φ = 38129184000.

The previous prime is 111210121097. The next prime is 111210121159. The reversal of 111210121120 is 21121012111.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 111210121120.

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, 49646256 + ... + 49648495.

It is an arithmetic number, because the mean of its divisors is an integer number (6255569376).

Almost surely, 2^111210121120 is an apocalyptic number.

111210121120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111210121120 is an abundant number, since it is smaller than the sum of its proper divisors (189057208928).

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

111210121120 is an equidigital number, since it uses as much as digits as its factorization.

111210121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99294773 (or 99294765 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111210121120 its reverse (21121012111), we get a palindrome (132331133231).

The spelling of 111210121120 in words is "one hundred eleven billion, two hundred ten million, one hundred twenty-one thousand, one hundred twenty".