22201320210021 has 6 divisors (see below), whose sum is σ = 32068573636710. Its totient is φ = 14800880140008.

The previous prime is 22201320209993. The next prime is 22201320210079. The reversal of 22201320210021 is 12001202310222.

22201320210021 is a `hidden beast` number, since 2 + 220 + 1 + 320 + 2 + 100 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15126576704100 + 7074743505921 = 3889290^2 + 2659839^2 .

It is not a de Polignac number, because 22201320210021 - 2²⁹ = 22200783339109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22201320209976 and 22201320210003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201320210721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1233406678326 + ... + 1233406678343.

It is an arithmetic number, because the mean of its divisors is an integer number (5344762272785).

Almost surely, 2^{22201320210021} is an apocalyptic number.

It is an amenable number.

22201320210021 is a deficient number, since it is larger than the sum of its proper divisors (9867253426689).

22201320210021 is a wasteful number, since it uses less digits than its factorization.

22201320210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2466813356675 (or 2466813356672 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22201320210021 its reverse (12001202310222), we get a palindrome (34202522520243).

The spelling of 22201320210021 in words is "twenty-two trillion, two hundred one billion, three hundred twenty million, two hundred ten thousand, twenty-one".