22220423321 has 2 divisors, whose sum is σ = 22220423322. Its totient is φ = 22220423320.

The previous prime is 22220423279. The next prime is 22220423341. The reversal of 22220423321 is 12332402222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21997339225 + 223084096 = 148315^2 + 14936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22220423321 is a prime.

It is not a weakly prime, because it can be changed into another prime (22220423341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110211660 + 11110211661.

It is an arithmetic number, because the mean of its divisors is an integer number (11110211661).

Almost surely, 2^22220423321 is an apocalyptic number.

It is an amenable number.

22220423321 is a deficient number, since it is larger than the sum of its proper divisors (1).

22220423321 is an equidigital number, since it uses as much as digits as its factorization.

22220423321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 22220423321 its reverse (12332402222), we get a palindrome (34552825543).

The spelling of 22220423321 in words is "twenty-two billion, two hundred twenty million, four hundred twenty-three thousand, three hundred twenty-one".