12012708857 has 2 divisors, whose sum is σ = 12012708858. Its totient is φ = 12012708856.

The previous prime is 12012708853. The next prime is 12012708863. The reversal of 12012708857 is 75880721021.

12012708857 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., 11350984681 + 661724176 = 106541^2 + 25724^2 .

It is a cyclic number.

It is not a de Polignac number, because 12012708857 - 2² = 12012708853 is a prime.

It is not a weakly prime, because it can be changed into another prime (12012708853) 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, 6006354428 + 6006354429.

It is an arithmetic number, because the mean of its divisors is an integer number (6006354429).

Almost surely, 2^12012708857 is an apocalyptic number.

It is an amenable number.

12012708857 is a deficient number, since it is larger than the sum of its proper divisors (1).

12012708857 is an equidigital number, since it uses as much as digits as its factorization.

12012708857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62720, while the sum is 41.

The spelling of 12012708857 in words is "twelve billion, twelve million, seven hundred eight thousand, eight hundred fifty-seven".