1321342203089 has 2 divisors, whose sum is σ = 1321342203090. Its totient is φ = 1321342203088.

The previous prime is 1321342203079. The next prime is 1321342203091. The reversal of 1321342203089 is 9803022431231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 718793665489 + 602548537600 = 847817^2 + 776240^2 .

It is an emirp because it is prime and its reverse (9803022431231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1321342203089 - 2¹⁶ = 1321342137553 is a prime.

It is a super-2 number, since 2×1321342203089² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 1321342203091, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1321342203019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660671101544 + 660671101545.

It is an arithmetic number, because the mean of its divisors is an integer number (660671101545).

Almost surely, 2^{1321342203089} is an apocalyptic number.

It is an amenable number.

1321342203089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321342203089 is an equidigital number, since it uses as much as digits as its factorization.

1321342203089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 1321342203089 in words is "one trillion, three hundred twenty-one billion, three hundred forty-two million, two hundred three thousand, eighty-nine".