22202000221 has 4 divisors (see below), whose sum is σ = 23508000252. Its totient is φ = 20896000192.

The previous prime is 22202000189. The next prime is 22202000243. The reversal of 22202000221 is 12200020222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15311340121 + 6890660100 = 123739^2 + 83010^2 .

It is a cyclic number.

It is not a de Polignac number, because 22202000221 - 2⁵ = 22202000189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22202000321) 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, 652999990 + ... + 653000023.

It is an arithmetic number, because the mean of its divisors is an integer number (5877000063).

Almost surely, 2^22202000221 is an apocalyptic number.

It is an amenable number.

22202000221 is a deficient number, since it is larger than the sum of its proper divisors (1306000031).

22202000221 is a wasteful number, since it uses less digits than its factorization.

22202000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306000030.

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

Adding to 22202000221 its reverse (12200020222), we get a palindrome (34402020443).

The spelling of 22202000221 in words is "twenty-two billion, two hundred two million, two hundred twenty-one", and thus it is an aban number.