22222112012120 has 16 divisors (see below), whose sum is σ = 49999752027360. Its totient is φ = 8888844804832.

The previous prime is 22222112012081. The next prime is 22222112012147. The reversal of 22222112012120 is 2121021122222.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22222112012092 and 22222112012101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277776400112 + ... + 277776400191.

It is an arithmetic number, because the mean of its divisors is an integer number (3124984501710).

Almost surely, 2^{22222112012120} is an apocalyptic number.

22222112012120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22222112012120 is an abundant number, since it is smaller than the sum of its proper divisors (27777640015240).

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

22222112012120 is a wasteful number, since it uses less digits than its factorization.

22222112012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555552800314 (or 555552800310 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22222112012120 its reverse (2121021122222), we get a palindrome (24343133134342).

The spelling of 22222112012120 in words is "twenty-two trillion, two hundred twenty-two billion, one hundred twelve million, twelve thousand, one hundred twenty".