22022200021 has 4 divisors (see below), whose sum is σ = 23181263200. Its totient is φ = 20863136844.

The previous prime is 22022199977. The next prime is 22022200037. The reversal of 22022200021 is 12000222022.

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 22022200021 - 2¹⁵ = 22022167253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22022199974 and 22022200010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22022200621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 579531561 + ... + 579531598.

It is an arithmetic number, because the mean of its divisors is an integer number (5795315800).

Almost surely, 2^22022200021 is an apocalyptic number.

It is an amenable number.

22022200021 is a deficient number, since it is larger than the sum of its proper divisors (1159063179).

22022200021 is a wasteful number, since it uses less digits than its factorization.

22022200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159063178.

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

Adding to 22022200021 its reverse (12000222022), we get a palindrome (34022422043).

The spelling of 22022200021 in words is "twenty-two billion, twenty-two million, two hundred thousand, twenty-one".