12724213 has 2 divisors, whose sum is σ = 12724214. Its totient is φ = 12724212.

The previous prime is 12724207. The next prime is 12724219. The reversal of 12724213 is 31242721.

It is a balanced prime because it is at equal distance from previous prime (12724207) and next prime (12724219).

It can be written as a sum of positive squares in only one way, i.e., 10093329 + 2630884 = 3177^2 + 1622^2 .

It is a cyclic number.

It is not a de Polignac number, because 12724213 - 2⁵ = 12724181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12724219) by changing a digit.

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 as a sum of consecutive naturals, namely, 6362106 + 6362107.

It is an arithmetic number, because the mean of its divisors is an integer number (6362107).

Almost surely, 2^12724213 is an apocalyptic number.

It is an amenable number.

12724213 is a deficient number, since it is larger than the sum of its proper divisors (1).

12724213 is an equidigital number, since it uses as much as digits as its factorization.

12724213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 22.

The square root of 12724213 is about 3567.1014843988. The cubic root of 12724213 is about 233.4588329408.

Adding to 12724213 its reverse (31242721), we get a palindrome (43966934).

The spelling of 12724213 in words is "twelve million, seven hundred twenty-four thousand, two hundred thirteen".