22120210221 has 16 divisors (see below), whose sum is σ = 30156342336. Its totient is φ = 14417410176.

The previous prime is 22120210181. The next prime is 22120210241. The reversal of 22120210221 is 12201202122.

It is not a de Polignac number, because 22120210221 - 2⁶ = 22120210157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22120210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120210241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200800 + ... + 290793.

It is an arithmetic number, because the mean of its divisors is an integer number (1884771396).

Almost surely, 2^22120210221 is an apocalyptic number.

It is an amenable number.

22120210221 is a deficient number, since it is larger than the sum of its proper divisors (8036132115).

22120210221 is a wasteful number, since it uses less digits than its factorization.

22120210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491932.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22120210221 its reverse (12201202122), we get a palindrome (34321412343).

The spelling of 22120210221 in words is "twenty-two billion, one hundred twenty million, two hundred ten thousand, two hundred twenty-one".