12721711 has 2 divisors, whose sum is σ = 12721712. Its totient is φ = 12721710.

The previous prime is 12721703. The next prime is 12721721. The reversal of 12721711 is 11712721.

12721711 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12721711 - 2³ = 12721703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12721721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6360855 + 6360856.

It is an arithmetic number, because the mean of its divisors is an integer number (6360856).

Almost surely, 2^12721711 is an apocalyptic number.

12721711 is a deficient number, since it is larger than the sum of its proper divisors (1).

12721711 is an equidigital number, since it uses as much as digits as its factorization.

12721711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 196, while the sum is 22.

The square root of 12721711 is about 3566.7507622485. The cubic root of 12721711 is about 233.4435300352.

The spelling of 12721711 in words is "twelve million, seven hundred twenty-one thousand, seven hundred eleven".