22200100201021 has 4 divisors (see below), whose sum is σ = 22242547811872. Its totient is φ = 22157652590172.

The previous prime is 22200100200977. The next prime is 22200100201031. The reversal of 22200100201021 is 12010200100222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22200100201021 - 2⁷ = 22200100200893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22200100200992 and 22200100201010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22200100201031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21223804641 + ... + 21223805686.

It is an arithmetic number, because the mean of its divisors is an integer number (5560636952968).

Almost surely, 2^{22200100201021} is an apocalyptic number.

It is an amenable number.

22200100201021 is a deficient number, since it is larger than the sum of its proper divisors (42447610851).

22200100201021 is an equidigital number, since it uses as much as digits as its factorization.

22200100201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42447610850.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22200100201021 its reverse (12010200100222), we get a palindrome (34210300301243).

The spelling of 22200100201021 in words is "twenty-two trillion, two hundred billion, one hundred million, two hundred one thousand, twenty-one".