12521326 has 8 divisors (see below), whose sum is σ = 18894960. Its totient is φ = 6223008.

The previous prime is 12521309. The next prime is 12521329. The reversal of 12521326 is 62312521.

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

It is a junction number, because it is equal to n+sod(n) for n = 12521297 and 12521306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12521329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18411 + ... + 19078.

It is an arithmetic number, because the mean of its divisors is an integer number (2361870).

Almost surely, 2^12521326 is an apocalyptic number.

12521326 is a deficient number, since it is larger than the sum of its proper divisors (6373634).

12521326 is a wasteful number, since it uses less digits than its factorization.

12521326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37658.

The product of its digits is 720, while the sum is 22.

The square root of 12521326 is about 3538.5485725082. The cubic root of 12521326 is about 232.2113487257.

Adding to 12521326 its reverse (62312521), we get a palindrome (74833847).

The spelling of 12521326 in words is "twelve million, five hundred twenty-one thousand, three hundred twenty-six".