12232152521 has 16 divisors (see below), whose sum is σ = 12596428800. Its totient is φ = 11873760000.

The previous prime is 12232152487. The next prime is 12232152523. The reversal of 12232152521 is 12525123221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12232152521 - 2²² = 12227958217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12232152523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2387000 + ... + 2392118.

It is an arithmetic number, because the mean of its divisors is an integer number (787276800).

Almost surely, 2^12232152521 is an apocalyptic number.

It is an amenable number.

12232152521 is a deficient number, since it is larger than the sum of its proper divisors (364276279).

12232152521 is a wasteful number, since it uses less digits than its factorization.

12232152521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5680.

The product of its digits is 2400, while the sum is 26.

Adding to 12232152521 its reverse (12525123221), we get a palindrome (24757275742).

The spelling of 12232152521 in words is "twelve billion, two hundred thirty-two million, one hundred fifty-two thousand, five hundred twenty-one".