12127692129 has 64 divisors (see below), whose sum is σ = 19397414400. Its totient is φ = 6733117440.

The previous prime is 12127692121. The next prime is 12127692163. The reversal of 12127692129 is 92129672121.

It is not a de Polignac number, because 12127692129 - 2³ = 12127692121 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12127692121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14217267 + ... + 14218119.

It is an arithmetic number, because the mean of its divisors is an integer number (303084600).

Almost surely, 2^12127692129 is an apocalyptic number.

It is an amenable number.

12127692129 is a deficient number, since it is larger than the sum of its proper divisors (7269722271).

12127692129 is an equidigital number, since it uses as much as digits as its factorization.

12127692129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1255 (or 1241 counting only the distinct ones).

The product of its digits is 54432, while the sum is 42.

The spelling of 12127692129 in words is "twelve billion, one hundred twenty-seven million, six hundred ninety-two thousand, one hundred twenty-nine".