23102221321 has 2 divisors, whose sum is σ = 23102221322. Its totient is φ = 23102221320.

The previous prime is 23102221319. The next prime is 23102221327. The reversal of 23102221321 is 12312220132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14353238025 + 8748983296 = 119805^2 + 93536^2 .

It is a cyclic number.

It is not a de Polignac number, because 23102221321 - 2¹ = 23102221319 is a prime.

Together with 23102221319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (23102221327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11551110660 + 11551110661.

It is an arithmetic number, because the mean of its divisors is an integer number (11551110661).

Almost surely, 2^23102221321 is an apocalyptic number.

It is an amenable number.

23102221321 is a deficient number, since it is larger than the sum of its proper divisors (1).

23102221321 is an equidigital number, since it uses as much as digits as its factorization.

23102221321 is an odious number, because the sum of its binary digits is odd.

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

Adding to 23102221321 its reverse (12312220132), we get a palindrome (35414441453).

The spelling of 23102221321 in words is "twenty-three billion, one hundred two million, two hundred twenty-one thousand, three hundred twenty-one".