1320243122117 has 2 divisors, whose sum is σ = 1320243122118. Its totient is φ = 1320243122116.

The previous prime is 1320243122101. The next prime is 1320243122167. The reversal of 1320243122117 is 7112213420231.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 789954774436 + 530288347681 = 888794^2 + 728209^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320243122117 - 2⁴ = 1320243122101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1320243122117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320243122167) 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, 660121561058 + 660121561059.

It is an arithmetic number, because the mean of its divisors is an integer number (660121561059).

Almost surely, 2^{1320243122117} is an apocalyptic number.

It is an amenable number.

1320243122117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320243122117 is an equidigital number, since it uses as much as digits as its factorization.

1320243122117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

Adding to 1320243122117 its reverse (7112213420231), we get a palindrome (8432456542348).

The spelling of 1320243122117 in words is "one trillion, three hundred twenty billion, two hundred forty-three million, one hundred twenty-two thousand, one hundred seventeen".