22212310321 has 4 divisors (see below), whose sum is σ = 22212654912. Its totient is φ = 22211965732.

The previous prime is 22212310303. The next prime is 22212310349. The reversal of 22212310321 is 12301321222.

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 22212310321 - 2⁹ = 22212309809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22212310391) 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, 43525 + ... + 215218.

It is an arithmetic number, because the mean of its divisors is an integer number (5553163728).

Almost surely, 2^22212310321 is an apocalyptic number.

It is an amenable number.

22212310321 is a deficient number, since it is larger than the sum of its proper divisors (344591).

22212310321 is an equidigital number, since it uses as much as digits as its factorization.

22212310321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344590.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 22212310321 its reverse (12301321222), we get a palindrome (34513631543).

The spelling of 22212310321 in words is "twenty-two billion, two hundred twelve million, three hundred ten thousand, three hundred twenty-one".