1320322420511 has 2 divisors, whose sum is σ = 1320322420512. Its totient is φ = 1320322420510.

The previous prime is 1320322420507. The next prime is 1320322420517. The reversal of 1320322420511 is 1150242230231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1320322420511 - 2² = 1320322420507 is a prime.

It is a super-2 number, since 2×1320322420511² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320322420517) 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, 660161210255 + 660161210256.

It is an arithmetic number, because the mean of its divisors is an integer number (660161210256).

Almost surely, 2^{1320322420511} is an apocalyptic number.

1320322420511 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320322420511 is an equidigital number, since it uses as much as digits as its factorization.

1320322420511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 1320322420511 its reverse (1150242230231), we get a palindrome (2470564650742).

The spelling of 1320322420511 in words is "one trillion, three hundred twenty billion, three hundred twenty-two million, four hundred twenty thousand, five hundred eleven".