1298721704411 has 2 divisors, whose sum is σ = 1298721704412. Its totient is φ = 1298721704410.

The previous prime is 1298721704369. The next prime is 1298721704509. The reversal of 1298721704411 is 1144071278921.

It is a weak prime.

It is an emirp because it is prime and its reverse (1144071278921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1298721704411 - 2³⁸ = 1023843797467 is a prime.

It is not a weakly prime, because it can be changed into another prime (1298721704611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649360852205 + 649360852206.

It is an arithmetic number, because the mean of its divisors is an integer number (649360852206).

Almost surely, 2^{1298721704411} is an apocalyptic number.

1298721704411 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298721704411 is an equidigital number, since it uses as much as digits as its factorization.

1298721704411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 47.

The spelling of 1298721704411 in words is "one trillion, two hundred ninety-eight billion, seven hundred twenty-one million, seven hundred four thousand, four hundred eleven".