22031222120 has 32 divisors (see below), whose sum is σ = 49593382920. Its totient is φ = 8808376320.

The previous prime is 22031222111. The next prime is 22031222149. The reversal of 22031222120 is 2122213022.

It can be written as a sum of positive squares in 4 ways, for example, as 12865457476 + 9165764644 = 113426^2 + 95738^2 .

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, 40997 + ... + 213876.

Almost surely, 2^22031222120 is an apocalyptic number.

22031222120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22031222120 is an abundant number, since it is smaller than the sum of its proper divisors (27562160800).

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

22031222120 is a wasteful number, since it uses less digits than its factorization.

22031222120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257045 (or 257041 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 22031222120 its reverse (2122213022), we get a palindrome (24153435142).

The spelling of 22031222120 in words is "twenty-two billion, thirty-one million, two hundred twenty-two thousand, one hundred twenty".