12001020000091 has 2 divisors, whose sum is σ = 12001020000092. Its totient is φ = 12001020000090.

The previous prime is 12001020000083. The next prime is 12001020000119. The reversal of 12001020000091 is 19000002010021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12001020000091 - 2³ = 12001020000083 is a prime.

It is not a weakly prime, because it can be changed into another prime (12001020000391) 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, 6000510000045 + 6000510000046.

It is an arithmetic number, because the mean of its divisors is an integer number (6000510000046).

Almost surely, 2^{12001020000091} is an apocalyptic number.

12001020000091 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001020000091 is an equidigital number, since it uses as much as digits as its factorization.

12001020000091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 16.

The spelling of 12001020000091 in words is "twelve trillion, one billion, twenty million, ninety-one", and thus it is an aban number and an uban number.