22202020321 has 8 divisors (see below), whose sum is σ = 23917003880. Its totient is φ = 20488056192.

The previous prime is 22202020289. The next prime is 22202020333. The reversal of 22202020321 is 12302020222.

It can be written as a sum of positive squares in 4 ways, for example, as 5462835921 + 16739184400 = 73911^2 + 129380^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22202020321 - 2⁵ = 22202020289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22202020295 and 22202020304.

It is not an unprimeable number, because it can be changed into a prime (22202020381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209316 + ... + 297013.

It is an arithmetic number, because the mean of its divisors is an integer number (2989625485).

Almost surely, 2^22202020321 is an apocalyptic number.

It is an amenable number.

22202020321 is a deficient number, since it is larger than the sum of its proper divisors (1714983559).

22202020321 is a wasteful number, since it uses less digits than its factorization.

22202020321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509715.

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 22202020321 its reverse (12302020222), we get a palindrome (34504040543).

Subtracting from 22202020321 its reverse (12302020222), we obtain a palindrome (9900000099).

The spelling of 22202020321 in words is "twenty-two billion, two hundred two million, twenty thousand, three hundred twenty-one".