1321321120307 has 2 divisors, whose sum is σ = 1321321120308. Its totient is φ = 1321321120306.

The previous prime is 1321321120247. The next prime is 1321321120331. The reversal of 1321321120307 is 7030211231231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1321321120307 - 2¹⁸ = 1321320858163 is a prime.

It is not a weakly prime, because it can be changed into another prime (1321321120807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660660560153 + 660660560154.

It is an arithmetic number, because the mean of its divisors is an integer number (660660560154).

Almost surely, 2^{1321321120307} is an apocalyptic number.

1321321120307 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321321120307 is an equidigital number, since it uses as much as digits as its factorization.

1321321120307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

Adding to 1321321120307 its reverse (7030211231231), we get a palindrome (8351532351538).

The spelling of 1321321120307 in words is "one trillion, three hundred twenty-one billion, three hundred twenty-one million, one hundred twenty thousand, three hundred seven".