12000012021191 has 2 divisors, whose sum is σ = 12000012021192. Its totient is φ = 12000012021190.

The previous prime is 12000012021187. The next prime is 12000012021223. The reversal of 12000012021191 is 19112021000021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12000012021191 - 2² = 12000012021187 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12000012021181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000006010595 + 6000006010596.

It is an arithmetic number, because the mean of its divisors is an integer number (6000006010596).

Almost surely, 2^{12000012021191} is an apocalyptic number.

12000012021191 is a deficient number, since it is larger than the sum of its proper divisors (1).

12000012021191 is an equidigital number, since it uses as much as digits as its factorization.

12000012021191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 12000012021191 in words is "twelve trillion, twelve million, twenty-one thousand, one hundred ninety-one".