22112212120 has 32 divisors (see below), whose sum is σ = 52679095200. Its totient is φ = 8324597248.

The previous prime is 22112212099. The next prime is 22112212159. The reversal of 22112212120 is 2121221122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22112212094 and 22112212103.

It is a congruent 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, 16258300 + ... + 16259659.

It is an arithmetic number, because the mean of its divisors is an integer number (1646221725).

Almost surely, 2^22112212120 is an apocalyptic number.

22112212120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22112212120 is an abundant number, since it is smaller than the sum of its proper divisors (30566883080).

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

22112212120 is a wasteful number, since it uses less digits than its factorization.

22112212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32517987 (or 32517983 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22112212120 its reverse (2121221122), we get a palindrome (24233433242).

The spelling of 22112212120 in words is "twenty-two billion, one hundred twelve million, two hundred twelve thousand, one hundred twenty".