22021002010020 has 96 divisors (see below), whose sum is σ = 67814594846208. Its totient is φ = 5305223388672.

The previous prime is 22021002009949. The next prime is 22021002010061. The reversal of 22021002010020 is 2001020012022.

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

It is a junction number, because it is equal to n+sod(n) for n = 22021002009978 and 22021002010005.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 300304339 + ... + 300377658.

It is an arithmetic number, because the mean of its divisors is an integer number (706402029648).

Almost surely, 2^{22021002010020} is an apocalyptic number.

22021002010020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021002010020 is an abundant number, since it is smaller than the sum of its proper divisors (45793592836188).

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

22021002010020 is a wasteful number, since it uses less digits than its factorization.

22021002010020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600682069 (or 600682067 counting only the distinct ones).

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

Adding to 22021002010020 its reverse (2001020012022), we get a palindrome (24022022022042).

The spelling of 22021002010020 in words is "twenty-two trillion, twenty-one billion, two million, ten thousand, twenty".