1321111423297 has 2 divisors, whose sum is σ = 1321111423298. Its totient is φ = 1321111423296.

The previous prime is 1321111423273. The next prime is 1321111423343. The reversal of 1321111423297 is 7923241111231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 887757799681 + 433353623616 = 942209^2 + 658296^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321111423297 is a prime.

It is a super-2 number, since 2×1321111423297² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1321111423207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660555711648 + 660555711649.

It is an arithmetic number, because the mean of its divisors is an integer number (660555711649).

Almost surely, 2^{1321111423297} is an apocalyptic number.

It is an amenable number.

1321111423297 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321111423297 is an equidigital number, since it uses as much as digits as its factorization.

1321111423297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 37.

The spelling of 1321111423297 in words is "one trillion, three hundred twenty-one billion, one hundred eleven million, four hundred twenty-three thousand, two hundred ninety-seven".