22323121321 has 2 divisors, whose sum is σ = 22323121322. Its totient is φ = 22323121320.

The previous prime is 22323121307. The next prime is 22323121361. The reversal of 22323121321 is 12312132322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20110359721 + 2212761600 = 141811^2 + 47040^2 .

It is a cyclic number.

It is not a de Polignac number, because 22323121321 - 2²⁷ = 22188903593 is a prime.

It is a super-3 number, since 3×22323121321³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22323121292 and 22323121301.

It is not a weakly prime, because it can be changed into another prime (22323121361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11161560660 + 11161560661.

It is an arithmetic number, because the mean of its divisors is an integer number (11161560661).

Almost surely, 2^22323121321 is an apocalyptic number.

It is an amenable number.

22323121321 is a deficient number, since it is larger than the sum of its proper divisors (1).

22323121321 is an equidigital number, since it uses as much as digits as its factorization.

22323121321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 22.

Adding to 22323121321 its reverse (12312132322), we get a palindrome (34635253643).

The spelling of 22323121321 in words is "twenty-two billion, three hundred twenty-three million, one hundred twenty-one thousand, three hundred twenty-one".