12020019695729 has 2 divisors, whose sum is σ = 12020019695730. Its totient is φ = 12020019695728.

The previous prime is 12020019695689. The next prime is 12020019695767. The reversal of 12020019695729 is 92759691002021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8570976430129 + 3449043265600 = 2927623^2 + 1857160^2 .

It is an emirp because it is prime and its reverse (92759691002021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12020019695729 - 2²⁴ = 12020002918513 is a prime.

It is not a weakly prime, because it can be changed into another prime (12020019695429) 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, 6010009847864 + 6010009847865.

It is an arithmetic number, because the mean of its divisors is an integer number (6010009847865).

Almost surely, 2^{12020019695729} is an apocalyptic number.

It is an amenable number.

12020019695729 is a deficient number, since it is larger than the sum of its proper divisors (1).

12020019695729 is an equidigital number, since it uses as much as digits as its factorization.

12020019695729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The spelling of 12020019695729 in words is "twelve trillion, twenty billion, nineteen million, six hundred ninety-five thousand, seven hundred twenty-nine".