1320221323087 has 2 divisors, whose sum is σ = 1320221323088. Its totient is φ = 1320221323086.

The previous prime is 1320221323063. The next prime is 1320221323151. The reversal of 1320221323087 is 7803231220231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1320221323087 - 2²³ = 1320212934479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320221323027) 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, 660110661543 + 660110661544.

It is an arithmetic number, because the mean of its divisors is an integer number (660110661544).

Almost surely, 2^{1320221323087} is an apocalyptic number.

1320221323087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320221323087 is an equidigital number, since it uses as much as digits as its factorization.

1320221323087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 34.

The spelling of 1320221323087 in words is "one trillion, three hundred twenty billion, two hundred twenty-one million, three hundred twenty-three thousand, eighty-seven".