23266352513221 has 2 divisors, whose sum is σ = 23266352513222. Its totient is φ = 23266352513220.

The previous prime is 23266352513207. The next prime is 23266352513227. The reversal of 23266352513221 is 12231525366232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15445772472321 + 7820580040900 = 3930111^2 + 2796530^2 .

It is a cyclic number.

It is not a de Polignac number, because 23266352513221 - 2²¹ = 23266350416069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23266352513227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11633176256610 + 11633176256611.

It is an arithmetic number, because the mean of its divisors is an integer number (11633176256611).

Almost surely, 2^{23266352513221} is an apocalyptic number.

It is an amenable number.

23266352513221 is a deficient number, since it is larger than the sum of its proper divisors (1).

23266352513221 is an equidigital number, since it uses as much as digits as its factorization.

23266352513221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 777600, while the sum is 43.

Adding to 23266352513221 its reverse (12231525366232), we get a palindrome (35497877879453).

The spelling of 23266352513221 in words is "twenty-three trillion, two hundred sixty-six billion, three hundred fifty-two million, five hundred thirteen thousand, two hundred twenty-one".