23221316455 has 16 divisors (see below), whose sum is σ = 28265164704. Its totient is φ = 18312192000.

The previous prime is 23221316453. The next prime is 23221316519. The reversal of 23221316455 is 55461312232.

It is not a de Polignac number, because 23221316455 - 2¹ = 23221316453 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23221316455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23221316453) 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 in 15 ways as a sum of consecutive naturals, for example, 26359 + ... + 217111.

It is an arithmetic number, because the mean of its divisors is an integer number (1766572794).

Almost surely, 2^23221316455 is an apocalyptic number.

23221316455 is a deficient number, since it is larger than the sum of its proper divisors (5043848249).

23221316455 is a wasteful number, since it uses less digits than its factorization.

23221316455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191106.

The product of its digits is 43200, while the sum is 34.

Adding to 23221316455 its reverse (55461312232), we get a palindrome (78682628687).

The spelling of 23221316455 in words is "twenty-three billion, two hundred twenty-one million, three hundred sixteen thousand, four hundred fifty-five".