23232221321 has 2 divisors, whose sum is σ = 23232221322. Its totient is φ = 23232221320.

The previous prime is 23232221251. The next prime is 23232221377. The reversal of 23232221321 is 12312223232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11970766921 + 11261454400 = 109411^2 + 106120^2 .

It is a cyclic number.

It is not a de Polignac number, because 23232221321 - 2¹⁴ = 23232204937 is a prime.

It is a super-2 number, since 2×23232221321² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23232421321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11616110660 + 11616110661.

It is an arithmetic number, because the mean of its divisors is an integer number (11616110661).

Almost surely, 2^23232221321 is an apocalyptic number.

It is an amenable number.

23232221321 is a deficient number, since it is larger than the sum of its proper divisors (1).

23232221321 is an equidigital number, since it uses as much as digits as its factorization.

23232221321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 23.

Adding to 23232221321 its reverse (12312223232), we get a palindrome (35544444553).

The spelling of 23232221321 in words is "twenty-three billion, two hundred thirty-two million, two hundred twenty-one thousand, three hundred twenty-one".