22021000120 has 64 divisors (see below), whose sum is σ = 56670220800. Its totient is φ = 7544085120.

The previous prime is 22021000109. The next prime is 22021000159. The reversal of 22021000120 is 2100012022.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 22021000097 and 22021000106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331021 + ... + 391939.

It is an arithmetic number, because the mean of its divisors is an integer number (885472200).

Almost surely, 2^22021000120 is an apocalyptic number.

22021000120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021000120 is an abundant number, since it is smaller than the sum of its proper divisors (34649220680).

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

22021000120 is a wasteful number, since it uses less digits than its factorization.

22021000120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62228 (or 62224 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 22021000120 its reverse (2100012022), we get a palindrome (24121012142).

The spelling of 22021000120 in words is "twenty-two billion, twenty-one million, one hundred twenty", and thus it is an aban number.