1312221100297 has 2 divisors, whose sum is σ = 1312221100298. Its totient is φ = 1312221100296.

The previous prime is 1312221100259. The next prime is 1312221100301. The reversal of 1312221100297 is 7920011222131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1024749265401 + 287471834896 = 1012299^2 + 536164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312221100297 is a prime.

It is not a weakly prime, because it can be changed into another prime (1312221100247) 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, 656110550148 + 656110550149.

It is an arithmetic number, because the mean of its divisors is an integer number (656110550149).

Almost surely, 2^{1312221100297} is an apocalyptic number.

It is an amenable number.

1312221100297 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312221100297 is an equidigital number, since it uses as much as digits as its factorization.

1312221100297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 31.

The spelling of 1312221100297 in words is "one trillion, three hundred twelve billion, two hundred twenty-one million, one hundred thousand, two hundred ninety-seven".