12821236 has 12 divisors (see below), whose sum is σ = 22462720. Its totient is φ = 6403320.

The previous prime is 12821227. The next prime is 12821261. The reversal of 12821236 is 63212821.

12821236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12821236.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4795 + ... + 6973.

Almost surely, 2^12821236 is an apocalyptic number.

It is an amenable number.

12821236 is a deficient number, since it is larger than the sum of its proper divisors (9641484).

12821236 is a wasteful number, since it uses less digits than its factorization.

12821236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3654 (or 3652 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 12821236 is about 3580.6753552926. The cubic root of 12821236 is about 234.0507110003.

The spelling of 12821236 in words is "twelve million, eight hundred twenty-one thousand, two hundred thirty-six".