12721019993711 has 2 divisors, whose sum is σ = 12721019993712. Its totient is φ = 12721019993710.

The previous prime is 12721019993701. The next prime is 12721019993719. The reversal of 12721019993711 is 11739991012721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12721019993711 - 2¹⁴ = 12721019977327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12721019993719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6360509996855 + 6360509996856.

It is an arithmetic number, because the mean of its divisors is an integer number (6360509996856).

Almost surely, 2^{12721019993711} is an apocalyptic number.

12721019993711 is a deficient number, since it is larger than the sum of its proper divisors (1).

12721019993711 is an equidigital number, since it uses as much as digits as its factorization.

12721019993711 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 428652, while the sum is 53.

The spelling of 12721019993711 in words is "twelve trillion, seven hundred twenty-one billion, nineteen million, nine hundred ninety-three thousand, seven hundred eleven".