1320312120979 has 2 divisors, whose sum is σ = 1320312120980. Its totient is φ = 1320312120978.

The previous prime is 1320312120973. The next prime is 1320312121001. The reversal of 1320312120979 is 9790212130231.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320312120979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1320312120973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660156060489 + 660156060490.

It is an arithmetic number, because the mean of its divisors is an integer number (660156060490).

Almost surely, 2^{1320312120979} is an apocalyptic number.

1320312120979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320312120979 is an equidigital number, since it uses as much as digits as its factorization.

1320312120979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 40.

The spelling of 1320312120979 in words is "one trillion, three hundred twenty billion, three hundred twelve million, one hundred twenty thousand, nine hundred seventy-nine".