12320344220309 has 2 divisors, whose sum is σ = 12320344220310. Its totient is φ = 12320344220308.

The previous prime is 12320344220297. The next prime is 12320344220339. The reversal of 12320344220309 is 90302244302321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9543638561284 + 2776705659025 = 3089278^2 + 1666345^2 .

It is an emirp because it is prime and its reverse (90302244302321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12320344220309 - 2⁸ = 12320344220053 is a prime.

It is a super-2 number, since 2×12320344220309² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12320344220339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160172110154 + 6160172110155.

It is an arithmetic number, because the mean of its divisors is an integer number (6160172110155).

Almost surely, 2^{12320344220309} is an apocalyptic number.

It is an amenable number.

12320344220309 is a deficient number, since it is larger than the sum of its proper divisors (1).

12320344220309 is an equidigital number, since it uses as much as digits as its factorization.

12320344220309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 35.

The spelling of 12320344220309 in words is "twelve trillion, three hundred twenty billion, three hundred forty-four million, two hundred twenty thousand, three hundred nine".