12521266 has 16 divisors (see below), whose sum is σ = 19958400. Its totient is φ = 5874768.

The previous prime is 12521239. The next prime is 12521291. The reversal of 12521266 is 66212521.

It is a super-3 number, since 3×12521266³ (a number of 22 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12521266.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2631 + ... + 5653.

It is an arithmetic number, because the mean of its divisors is an integer number (1247400).

Almost surely, 2^12521266 is an apocalyptic number.

12521266 is a deficient number, since it is larger than the sum of its proper divisors (7437134).

12521266 is a wasteful number, since it uses less digits than its factorization.

12521266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3153.

The product of its digits is 1440, while the sum is 25.

The square root of 12521266 is about 3538.5400944457. The cubic root of 12521266 is about 232.2109778197.

Adding to 12521266 its reverse (66212521), we get a palindrome (78733787).

The spelling of 12521266 in words is "twelve million, five hundred twenty-one thousand, two hundred sixty-six".