1321320142211 has 2 divisors, whose sum is σ = 1321320142212. Its totient is φ = 1321320142210.

The previous prime is 1321320142189. The next prime is 1321320142229. The reversal of 1321320142211 is 1122410231231.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321320142211 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1321320142411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660660071105 + 660660071106.

It is an arithmetic number, because the mean of its divisors is an integer number (660660071106).

Almost surely, 2^{1321320142211} is an apocalyptic number.

1321320142211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321320142211 is an equidigital number, since it uses as much as digits as its factorization.

1321320142211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 1321320142211 its reverse (1122410231231), we get a palindrome (2443730373442).

The spelling of 1321320142211 in words is "one trillion, three hundred twenty-one billion, three hundred twenty million, one hundred forty-two thousand, two hundred eleven".