12521130 has 16 divisors (see below), whose sum is σ = 30050784. Its totient is φ = 3338960.

The previous prime is 12521107. The next prime is 12521137. The reversal of 12521130 is 3112521.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12521137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208656 + ... + 208715.

It is an arithmetic number, because the mean of its divisors is an integer number (1878174).

Almost surely, 2^12521130 is an apocalyptic number.

12521130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12521130 is an abundant number, since it is smaller than the sum of its proper divisors (17529654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12521130 is a wasteful number, since it uses less digits than its factorization.

12521130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417381.

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

The square root of 12521130 is about 3538.5208774289. The cubic root of 12521130 is about 232.2101370952.

Adding to 12521130 its reverse (3112521), we get a palindrome (15633651).

The spelling of 12521130 in words is "twelve million, five hundred twenty-one thousand, one hundred thirty".