22021012120 has 32 divisors (see below), whose sum is σ = 49553172720. Its totient is φ = 8807356800.

The previous prime is 22021012109. The next prime is 22021012121. The reversal of 22021012120 is 2121012022.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22021012120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021012121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368239 + ... + 423841.

Almost surely, 2^22021012120 is an apocalyptic number.

22021012120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021012120 is an abundant number, since it is smaller than the sum of its proper divisors (27532160600).

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

22021012120 is a wasteful number, since it uses less digits than its factorization.

22021012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65515 (or 65511 counting only the distinct ones).

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

Adding to 22021012120 its reverse (2121012022), we get a palindrome (24142024142).

The spelling of 22021012120 in words is "twenty-two billion, twenty-one million, twelve thousand, one hundred twenty".