12134012857 has 2 divisors, whose sum is σ = 12134012858. Its totient is φ = 12134012856.

The previous prime is 12134012843. The next prime is 12134012881. The reversal of 12134012857 is 75821043121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7167146281 + 4966866576 = 84659^2 + 70476^2 .

It is a cyclic number.

It is not a de Polignac number, because 12134012857 - 2²³ = 12125624249 is a prime.

It is not a weakly prime, because it can be changed into another prime (12134012257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6067006428 + 6067006429.

It is an arithmetic number, because the mean of its divisors is an integer number (6067006429).

Almost surely, 2^12134012857 is an apocalyptic number.

It is an amenable number.

12134012857 is a deficient number, since it is larger than the sum of its proper divisors (1).

12134012857 is an equidigital number, since it uses as much as digits as its factorization.

12134012857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 34.

Adding to 12134012857 its reverse (75821043121), we get a palindrome (87955055978).

The spelling of 12134012857 in words is "twelve billion, one hundred thirty-four million, twelve thousand, eight hundred fifty-seven".