1321022444089 has 2 divisors, whose sum is σ = 1321022444090. Its totient is φ = 1321022444088.

The previous prime is 1321022444087. The next prime is 1321022444113. The reversal of 1321022444089 is 9804442201231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1264426034089 + 56596410000 = 1124467^2 + 237900^2 .

It is a cyclic number.

It is not a de Polignac number, because 1321022444089 - 2¹ = 1321022444087 is a prime.

Together with 1321022444087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1321022444087) 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, 660511222044 + 660511222045.

It is an arithmetic number, because the mean of its divisors is an integer number (660511222045).

Almost surely, 2^{1321022444089} is an apocalyptic number.

It is an amenable number.

1321022444089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321022444089 is an equidigital number, since it uses as much as digits as its factorization.

1321022444089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 40.

The spelling of 1321022444089 in words is "one trillion, three hundred twenty-one billion, twenty-two million, four hundred forty-four thousand, eighty-nine".