1320228845917 has 2 divisors, whose sum is σ = 1320228845918. Its totient is φ = 1320228845916.

The previous prime is 1320228845861. The next prime is 1320228845981. The reversal of 1320228845917 is 7195488220231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1023959824281 + 296269021636 = 1011909^2 + 544306^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320228845917 - 2²⁷ = 1320094628189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320228845987) 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, 660114422958 + 660114422959.

It is an arithmetic number, because the mean of its divisors is an integer number (660114422959).

Almost surely, 2^{1320228845917} is an apocalyptic number.

It is an amenable number.

1320228845917 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320228845917 is an equidigital number, since it uses as much as digits as its factorization.

1320228845917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 1320228845917 in words is "one trillion, three hundred twenty billion, two hundred twenty-eight million, eight hundred forty-five thousand, nine hundred seventeen".