12216593 has 2 divisors, whose sum is σ = 12216594. Its totient is φ = 12216592.

The previous prime is 12216583. The next prime is 12216619. The reversal of 12216593 is 39561221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6801664 + 5414929 = 2608^2 + 2327^2 .

It is a cyclic number.

It is not a de Polignac number, because 12216593 - 2⁴ = 12216577 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12216583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6108296 + 6108297.

It is an arithmetic number, because the mean of its divisors is an integer number (6108297).

Almost surely, 2^12216593 is an apocalyptic number.

It is an amenable number.

12216593 is a deficient number, since it is larger than the sum of its proper divisors (1).

12216593 is an equidigital number, since it uses as much as digits as its factorization.

12216593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 29.

The square root of 12216593 is about 3495.2243132595. The cubic root of 12216593 is about 230.3120716534.

The spelling of 12216593 in words is "twelve million, two hundred sixteen thousand, five hundred ninety-three".