1321223301239 has 2 divisors, whose sum is σ = 1321223301240. Its totient is φ = 1321223301238.

The previous prime is 1321223301179. The next prime is 1321223301263. The reversal of 1321223301239 is 9321033221231.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321223301239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321223306239) 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, 660611650619 + 660611650620.

It is an arithmetic number, because the mean of its divisors is an integer number (660611650620).

Almost surely, 2^{1321223301239} is an apocalyptic number.

1321223301239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321223301239 is an equidigital number, since it uses as much as digits as its factorization.

1321223301239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 32.

The spelling of 1321223301239 in words is "one trillion, three hundred twenty-one billion, two hundred twenty-three million, three hundred one thousand, two hundred thirty-nine".