1320120070961 has 2 divisors, whose sum is σ = 1320120070962. Its totient is φ = 1320120070960.

The previous prime is 1320120070949. The next prime is 1320120070967. The reversal of 1320120070961 is 1690700210231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1285856209936 + 34263861025 = 1133956^2 + 185105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320120070961 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 (1320120070967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660060035480 + 660060035481.

It is an arithmetic number, because the mean of its divisors is an integer number (660060035481).

Almost surely, 2^{1320120070961} is an apocalyptic number.

It is an amenable number.

1320120070961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320120070961 is an equidigital number, since it uses as much as digits as its factorization.

1320120070961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

The spelling of 1320120070961 in words is "one trillion, three hundred twenty billion, one hundred twenty million, seventy thousand, nine hundred sixty-one".