12129004799 has 2 divisors, whose sum is σ = 12129004800. Its totient is φ = 12129004798.

The previous prime is 12129004781. The next prime is 12129004801. The reversal of 12129004799 is 99740092121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12129004799 - 2²⁴ = 12112227583 is a prime.

It is a super-2 number, since 2×12129004799² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 12129004801, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12129204799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6064502399 + 6064502400.

It is an arithmetic number, because the mean of its divisors is an integer number (6064502400).

Almost surely, 2^12129004799 is an apocalyptic number.

12129004799 is a deficient number, since it is larger than the sum of its proper divisors (1).

12129004799 is an equidigital number, since it uses as much as digits as its factorization.

12129004799 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 44.

The spelling of 12129004799 in words is "twelve billion, one hundred twenty-nine million, four thousand, seven hundred ninety-nine".