22202002321 has 4 divisors (see below), whose sum is σ = 22202315044. Its totient is φ = 22201689600.

The previous prime is 22202002297. The next prime is 22202002337. The reversal of 22202002321 is 12320020222.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 9412880400 + 12789121921 = 97020^2 + 113089^2 .

It is a cyclic number.

It is not a de Polignac number, because 22202002321 - 2¹⁷ = 22201871249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22202002295 and 22202002304.

It is not an unprimeable number, because it can be changed into a prime (22202000321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7081 + ... + 210841.

It is an arithmetic number, because the mean of its divisors is an integer number (5550578761).

Almost surely, 2^22202002321 is an apocalyptic number.

It is an amenable number.

22202002321 is a deficient number, since it is larger than the sum of its proper divisors (312723).

22202002321 is a wasteful number, since it uses less digits than its factorization.

22202002321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312722.

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

Adding to 22202002321 its reverse (12320020222), we get a palindrome (34522022543).

The spelling of 22202002321 in words is "twenty-two billion, two hundred two million, two thousand, three hundred twenty-one".