12724223 has 2 divisors, whose sum is σ = 12724224. Its totient is φ = 12724222.

The previous prime is 12724219. The next prime is 12724249. The reversal of 12724223 is 32242721.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12724223 - 2² = 12724219 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12724213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6362111 + 6362112.

It is an arithmetic number, because the mean of its divisors is an integer number (6362112).

Almost surely, 2^12724223 is an apocalyptic number.

12724223 is a deficient number, since it is larger than the sum of its proper divisors (1).

12724223 is an equidigital number, since it uses as much as digits as its factorization.

12724223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 23.

The square root of 12724223 is about 3567.1028860968. The cubic root of 12724223 is about 233.4588940994.

Adding to 12724223 its reverse (32242721), we get a palindrome (44966944).

The spelling of 12724223 in words is "twelve million, seven hundred twenty-four thousand, two hundred twenty-three".