12786076021 has 2 divisors, whose sum is σ = 12786076022. Its totient is φ = 12786076020.

The previous prime is 12786076007. The next prime is 12786076099. The reversal of 12786076021 is 12067068721.

12786076021 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 can be written as a sum of positive squares in only one way, i.e., 12732639921 + 53436100 = 112839^2 + 7310^2 .

It is a cyclic number.

It is not a de Polignac number, because 12786076021 - 2⁷ = 12786075893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12786071021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6393038010 + 6393038011.

It is an arithmetic number, because the mean of its divisors is an integer number (6393038011).

Almost surely, 2^12786076021 is an apocalyptic number.

It is an amenable number.

12786076021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12786076021 is an equidigital number, since it uses as much as digits as its factorization.

12786076021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 40.

The spelling of 12786076021 in words is "twelve billion, seven hundred eighty-six million, seventy-six thousand, twenty-one".