12521332 has 6 divisors (see below), whose sum is σ = 21912338. Its totient is φ = 6260664.

The previous prime is 12521329. The next prime is 12521339. The reversal of 12521332 is 23312521.

It can be written as a sum of positive squares in only one way, i.e., 11874916 + 646416 = 3446^2 + 804^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12521339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565163 + ... + 1565170.

Almost surely, 2^12521332 is an apocalyptic number.

It is an amenable number.

12521332 is a deficient number, since it is larger than the sum of its proper divisors (9391006).

12521332 is a wasteful number, since it uses less digits than its factorization.

12521332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3130337 (or 3130335 counting only the distinct ones).

The product of its digits is 360, while the sum is 19.

The square root of 12521332 is about 3538.5494203134. The cubic root of 12521332 is about 232.2113858162.

Adding to 12521332 its reverse (23312521), we get a palindrome (35833853).

The spelling of 12521332 in words is "twelve million, five hundred twenty-one thousand, three hundred thirty-two".