22212330321 has 4 divisors (see below), whose sum is σ = 29616440432. Its totient is φ = 14808220212.

The previous prime is 22212330313. The next prime is 22212330337. The reversal of 22212330321 is 12303321222.

It is a happy number.

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 not a de Polignac number, because 22212330321 - 2³ = 22212330313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22212330391) 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, 3702055051 + ... + 3702055056.

It is an arithmetic number, because the mean of its divisors is an integer number (7404110108).

Almost surely, 2^22212330321 is an apocalyptic number.

It is an amenable number.

22212330321 is a deficient number, since it is larger than the sum of its proper divisors (7404110111).

22212330321 is an equidigital number, since it uses as much as digits as its factorization.

22212330321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7404110110.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 22212330321 its reverse (12303321222), we get a palindrome (34515651543).

Subtracting from 22212330321 its reverse (12303321222), we obtain a palindrome (9909009099).

The spelling of 22212330321 in words is "twenty-two billion, two hundred twelve million, three hundred thirty thousand, three hundred twenty-one".