22200213221 has 4 divisors (see below), whose sum is σ = 22202227392. Its totient is φ = 22198199052.

The previous prime is 22200213209. The next prime is 22200213223. The reversal of 22200213221 is 12231200222.

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 22200213221 - 2¹⁸ = 22199951077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22200213221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22200213223) 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, 990461 + ... + 1012626.

It is an arithmetic number, because the mean of its divisors is an integer number (5550556848).

Almost surely, 2^22200213221 is an apocalyptic number.

It is an amenable number.

22200213221 is a deficient number, since it is larger than the sum of its proper divisors (2014171).

22200213221 is a wasteful number, since it uses less digits than its factorization.

22200213221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2014170.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 22200213221 its reverse (12231200222), we get a palindrome (34431413443).

The spelling of 22200213221 in words is "twenty-two billion, two hundred million, two hundred thirteen thousand, two hundred twenty-one".