112122221220 has 48 divisors (see below), whose sum is σ = 348824689920. Its totient is φ = 29899258848.

The previous prime is 112122221213. The next prime is 112122221273. The reversal of 112122221220 is 22122221211.

It is a happy number.

112122221220 is a `hidden beast` number, since 11 + 212 + 2 + 221 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 112122221193 and 112122221202.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103816332 + ... + 103817411.

It is an arithmetic number, because the mean of its divisors is an integer number (7267181040).

Almost surely, 2^112122221220 is an apocalyptic number.

112122221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

112122221220 is an abundant number, since it is smaller than the sum of its proper divisors (236702468700).

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

112122221220 is a wasteful number, since it uses less digits than its factorization.

112122221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207633761 (or 207633753 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 112122221220 its reverse (22122221211), we get a palindrome (134244442431).

Subtracting from 112122221220 its reverse (22122221211), we obtain a palindrome (90000000009).

The spelling of 112122221220 in words is "one hundred twelve billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred twenty".