22012102120 has 16 divisors (see below), whose sum is σ = 49527229860. Its totient is φ = 8804840832.

The previous prime is 22012102111. The next prime is 22012102157. The reversal of 22012102120 is 2120121022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20810370564 + 1201731556 = 144258^2 + 34666^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22012102120.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275151237 + ... + 275151316.

Almost surely, 2^22012102120 is an apocalyptic number.

22012102120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22012102120 is an abundant number, since it is smaller than the sum of its proper divisors (27515127740).

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

22012102120 is a wasteful number, since it uses less digits than its factorization.

22012102120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550302564 (or 550302560 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22012102120 its reverse (2120121022), we get a palindrome (24132223142).

The spelling of 22012102120 in words is "twenty-two billion, twelve million, one hundred two thousand, one hundred twenty".