112112021220 has 48 divisors (see below), whose sum is σ = 314622342720. Its totient is φ = 29829045376.

The previous prime is 112112021179. The next prime is 112112021237. The reversal of 112112021220 is 22120211211.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 112112021220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2082375 + ... + 2135534.

It is an arithmetic number, because the mean of its divisors is an integer number (6554632140).

Almost surely, 2^112112021220 is an apocalyptic number.

112112021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

112112021220 is an abundant number, since it is smaller than the sum of its proper divisors (202510321500).

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

112112021220 is a wasteful number, since it uses less digits than its factorization.

112112021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4218364 (or 4218362 counting only the distinct ones).

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

Adding to 112112021220 its reverse (22120211211), we get a palindrome (134232232431).

The spelling of 112112021220 in words is "one hundred twelve billion, one hundred twelve million, twenty-one thousand, two hundred twenty".