12232521 has 12 divisors (see below), whose sum is σ = 20193472. Its totient is φ = 6989976.

The previous prime is 12232499. The next prime is 12232531. The reversal of 12232521 is 12523221.

It is not a de Polignac number, because 12232521 - 2⁵ = 12232489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12232494 and 12232503.

It is not an unprimeable number, because it can be changed into a prime (12232531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97021 + ... + 97146.

Almost surely, 2^12232521 is an apocalyptic number.

It is an amenable number.

12232521 is a deficient number, since it is larger than the sum of its proper divisors (7960951).

12232521 is a wasteful number, since it uses less digits than its factorization.

12232521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194180 (or 194177 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 12232521 is about 3497.5021086484. The cubic root of 12232521 is about 230.4121218485.

Adding to 12232521 its reverse (12523221), we get a palindrome (24755742).

The spelling of 12232521 in words is "twelve million, two hundred thirty-two thousand, five hundred twenty-one".