22202002021 has 4 divisors (see below), whose sum is σ = 22578307200. Its totient is φ = 21825696844.

The previous prime is 22202002013. The next prime is 22202002027. The reversal of 22202002021 is 12020020222.

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 22202002021 - 2³ = 22202002013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22202001992 and 22202002010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22202002027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188152501 + ... + 188152618.

It is an arithmetic number, because the mean of its divisors is an integer number (5644576800).

Almost surely, 2^22202002021 is an apocalyptic number.

It is an amenable number.

22202002021 is a deficient number, since it is larger than the sum of its proper divisors (376305179).

22202002021 is an equidigital number, since it uses as much as digits as its factorization.

22202002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376305178.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 22202002021 its reverse (12020020222), we get a palindrome (34222022243).

The spelling of 22202002021 in words is "twenty-two billion, two hundred two million, two thousand, twenty-one".