12001429729 has 2 divisors, whose sum is σ = 12001429730. Its totient is φ = 12001429728.

The previous prime is 12001429709. The next prime is 12001429747. The reversal of 12001429729 is 92792410021.

12001429729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10628579025 + 1372850704 = 103095^2 + 37052^2 .

It is a cyclic number.

It is not a de Polignac number, because 12001429729 - 2⁹ = 12001429217 is a prime.

It is not a weakly prime, because it can be changed into another prime (12001429709) 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, 6000714864 + 6000714865.

It is an arithmetic number, because the mean of its divisors is an integer number (6000714865).

Almost surely, 2^12001429729 is an apocalyptic number.

It is an amenable number.

12001429729 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001429729 is an equidigital number, since it uses as much as digits as its factorization.

12001429729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The spelling of 12001429729 in words is "twelve billion, one million, four hundred twenty-nine thousand, seven hundred twenty-nine".