12445213 has 12 divisors (see below), whose sum is σ = 13785184. Its totient is φ = 11226600.

The previous prime is 12445187. The next prime is 12445249. The reversal of 12445213 is 31254421.

It is not a de Polignac number, because 12445213 - 2⁹ = 12444701 is a prime.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12445613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19408 + ... + 20038.

Almost surely, 2^12445213 is an apocalyptic number.

It is an amenable number.

12445213 is a deficient number, since it is larger than the sum of its proper divisors (1339971).

12445213 is a wasteful number, since it uses less digits than its factorization.

12445213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816 (or 805 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 12445213 is about 3527.7773455818. Note that the first 3 decimals coincide. The cubic root of 12445213 is about 231.7398801316.

Adding to 12445213 its reverse (31254421), we get a palindrome (43699634).

The spelling of 12445213 in words is "twelve million, four hundred forty-five thousand, two hundred thirteen".