23321275521 has 8 divisors (see below), whose sum is σ = 31201161600. Its totient is φ = 15494453232.

The previous prime is 23321275459. The next prime is 23321275561. The reversal of 23321275521 is 12557212332.

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

It is not a de Polignac number, because 23321275521 - 2¹¹ = 23321273473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23321275561) 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, 13264921 + ... + 13266678.

It is an arithmetic number, because the mean of its divisors is an integer number (3900145200).

Almost surely, 2^23321275521 is an apocalyptic number.

It is an amenable number.

23321275521 is a deficient number, since it is larger than the sum of its proper divisors (7879886079).

23321275521 is a wasteful number, since it uses less digits than its factorization.

23321275521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26531895.

The product of its digits is 25200, while the sum is 33.

Adding to 23321275521 its reverse (12557212332), we get a palindrome (35878487853).

The spelling of 23321275521 in words is "twenty-three billion, three hundred twenty-one million, two hundred seventy-five thousand, five hundred twenty-one".