12322521 has 6 divisors (see below), whose sum is σ = 17799210. Its totient is φ = 8215008.

The previous prime is 12322451. The next prime is 12322523. The reversal of 12322521 is 12522321.

12322521 is a `hidden beast` number, since 123 + 22 + 521 = 666.

12322521 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6734025 + 5588496 = 2595^2 + 2364^2 .

It is not a de Polignac number, because 12322521 - 2¹⁰ = 12321497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12322494 and 12322503.

It is not an unprimeable number, because it can be changed into a prime (12322523) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 684576 + ... + 684593.

It is an arithmetic number, because the mean of its divisors is an integer number (2966535).

Almost surely, 2^12322521 is an apocalyptic number.

It is an amenable number.

12322521 is a deficient number, since it is larger than the sum of its proper divisors (5476689).

12322521 is a wasteful number, since it uses less digits than its factorization.

12322521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369175 (or 1369172 counting only the distinct ones).

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

The square root of 12322521 is about 3510.3448548540. The cubic root of 12322521 is about 230.9758225103.

Adding to 12322521 its reverse (12522321), we get a palindrome (24844842).

The spelling of 12322521 in words is "twelve million, three hundred twenty-two thousand, five hundred twenty-one".