23266503321221 has 8 divisors (see below), whose sum is σ = 23660936096640. Its totient is φ = 22872073387968.

The previous prime is 23266503321199. The next prime is 23266503321227. The reversal of 23266503321221 is 12212330566232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23266503321221 - 2⁴² = 18868456810117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23266503321227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21788045 + ... + 22830941.

It is an arithmetic number, because the mean of its divisors is an integer number (2957617012080).

Almost surely, 2^{23266503321221} is an apocalyptic number.

It is an amenable number.

23266503321221 is a deficient number, since it is larger than the sum of its proper divisors (394432775419).

23266503321221 is a wasteful number, since it uses less digits than its factorization.

23266503321221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1421083.

The product of its (nonzero) digits is 155520, while the sum is 38.

Adding to 23266503321221 its reverse (12212330566232), we get a palindrome (35478833887453).

The spelling of 23266503321221 in words is "twenty-three trillion, two hundred sixty-six billion, five hundred three million, three hundred twenty-one thousand, two hundred twenty-one".