22823344332821 has 2 divisors, whose sum is σ = 22823344332822. Its totient is φ = 22823344332820.

The previous prime is 22823344332787. The next prime is 22823344332857. The reversal of 22823344332821 is 12823344332822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13338090058225 + 9485254274596 = 3652135^2 + 3079814^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22823344332821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22823344362821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11411672166410 + 11411672166411.

It is an arithmetic number, because the mean of its divisors is an integer number (11411672166411).

Almost surely, 2^{22823344332821} is an apocalyptic number.

It is an amenable number.

22823344332821 is a deficient number, since it is larger than the sum of its proper divisors (1).

22823344332821 is an equidigital number, since it uses as much as digits as its factorization.

22823344332821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2654208, while the sum is 47.

Subtracting from 22823344332821 its reverse (12823344332822), we obtain a palindrome (9999999999999).

The spelling of 22823344332821 in words is "twenty-two trillion, eight hundred twenty-three billion, three hundred forty-four million, three hundred thirty-two thousand, eight hundred twenty-one".