22201020200021 has 16 divisors (see below), whose sum is σ = 24952619655936. Its totient is φ = 19598847413376.

The previous prime is 22201020200017. The next prime is 22201020200057. The reversal of 22201020200021 is 12000202010222.

It is a cyclic number.

It is not a de Polignac number, because 22201020200021 - 2² = 22201020200017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22201020199969 and 22201020200005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201020200521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4690640 + ... + 8148873.

It is an arithmetic number, because the mean of its divisors is an integer number (1559538728496).

Almost surely, 2^{22201020200021} is an apocalyptic number.

It is an amenable number.

22201020200021 is a deficient number, since it is larger than the sum of its proper divisors (2751599455915).

22201020200021 is a wasteful number, since it uses less digits than its factorization.

22201020200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12845332.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22201020200021 its reverse (12000202010222), we get a palindrome (34201222210243).

The spelling of 22201020200021 in words is "twenty-two trillion, two hundred one billion, twenty million, two hundred thousand, twenty-one".