12521036 has 24 divisors (see below), whose sum is σ = 23998464. Its totient is φ = 5668880.

The previous prime is 12521021. The next prime is 12521053. The reversal of 12521036 is 63012521.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 12520999 and 12521017.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16481 + ... + 17223.

It is an arithmetic number, because the mean of its divisors is an integer number (999936).

Almost surely, 2^12521036 is an apocalyptic number.

It is an amenable number.

12521036 is a deficient number, since it is larger than the sum of its proper divisors (11477428).

12521036 is a wasteful number, since it uses less digits than its factorization.

12521036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141 (or 1139 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 12521036 is about 3538.5075950180. The cubic root of 12521036 is about 232.2095560026.

Adding to 12521036 its reverse (63012521), we get a palindrome (75533557).

The spelling of 12521036 in words is "twelve million, five hundred twenty-one thousand, thirty-six".