12130521 has 16 divisors (see below), whose sum is σ = 17707200. Its totient is φ = 7341120.

The previous prime is 12130507. The next prime is 12130523. The reversal of 12130521 is 12503121.

12130521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12130521 - 2¹⁰ = 12129497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12130521.

It is not an unprimeable number, because it can be changed into a prime (12130523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171 + ... + 4928.

It is an arithmetic number, because the mean of its divisors is an integer number (1106700).

Almost surely, 2^12130521 is an apocalyptic number.

It is an amenable number.

12130521 is a deficient number, since it is larger than the sum of its proper divisors (5576679).

12130521 is a wasteful number, since it uses less digits than its factorization.

12130521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5176.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 12130521 is about 3482.8897484704. The cubic root of 12130521 is about 229.7699085201.

Adding to 12130521 its reverse (12503121), we get a palindrome (24633642).

The spelling of 12130521 in words is "twelve million, one hundred thirty thousand, five hundred twenty-one".