22021201000020 has 96 divisors (see below), whose sum is σ = 64437545007360. Its totient is φ = 5608504028160.

The previous prime is 22021200999989. The next prime is 22021201000039. The reversal of 22021201000020 is 2000010212022.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11158465 + ... + 12982824.

It is an arithmetic number, because the mean of its divisors is an integer number (671224427160).

Almost surely, 2^{22021201000020} is an apocalyptic number.

22021201000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021201000020 is an abundant number, since it is smaller than the sum of its proper divisors (42416344007340).

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

22021201000020 is a wasteful number, since it uses less digits than its factorization.

22021201000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24141985 (or 24141983 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22021201000020 its reverse (2000010212022), we get a palindrome (24021211212042).

The spelling of 22021201000020 in words is "twenty-two trillion, twenty-one billion, two hundred one million, twenty", and thus it is an aban number.