1320243121339 has 2 divisors, whose sum is σ = 1320243121340. Its totient is φ = 1320243121338.

The previous prime is 1320243121291. The next prime is 1320243121367. The reversal of 1320243121339 is 9331213420231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1320243121339 - 2¹¹ = 1320243119291 is a prime.

It is not a weakly prime, because it can be changed into another prime (1320243128339) 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, 660121560669 + 660121560670.

It is an arithmetic number, because the mean of its divisors is an integer number (660121560670).

Almost surely, 2^{1320243121339} is an apocalyptic number.

1320243121339 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320243121339 is an equidigital number, since it uses as much as digits as its factorization.

1320243121339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 34.

The spelling of 1320243121339 in words is "one trillion, three hundred twenty billion, two hundred forty-three million, one hundred twenty-one thousand, three hundred thirty-nine".