23221316453 has 2 divisors, whose sum is σ = 23221316454. Its totient is φ = 23221316452.

The previous prime is 23221316441. The next prime is 23221316519. The reversal of 23221316453 is 35461312232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15491038369 + 7730278084 = 124463^2 + 87922^2 .

It is a cyclic number.

It is not a de Polignac number, because 23221316453 - 2⁸ = 23221316197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23221316423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11610658226 + 11610658227.

It is an arithmetic number, because the mean of its divisors is an integer number (11610658227).

Almost surely, 2^23221316453 is an apocalyptic number.

It is an amenable number.

23221316453 is a deficient number, since it is larger than the sum of its proper divisors (1).

23221316453 is an equidigital number, since it uses as much as digits as its factorization.

23221316453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 32.

Adding to 23221316453 its reverse (35461312232), we get a palindrome (58682628685).

The spelling of 23221316453 in words is "twenty-three billion, two hundred twenty-one million, three hundred sixteen thousand, four hundred fifty-three".