12102120010091 has 2 divisors, whose sum is σ = 12102120010092. Its totient is φ = 12102120010090.

The previous prime is 12102120010081. The next prime is 12102120010159. The reversal of 12102120010091 is 19001002120121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12102120010091 - 2⁶ = 12102120010027 is a prime.

It is a super-2 number, since 2×12102120010091² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12102120010081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051060005045 + 6051060005046.

It is an arithmetic number, because the mean of its divisors is an integer number (6051060005046).

Almost surely, 2^{12102120010091} is an apocalyptic number.

12102120010091 is a deficient number, since it is larger than the sum of its proper divisors (1).

12102120010091 is an equidigital number, since it uses as much as digits as its factorization.

12102120010091 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 12102120010091 in words is "twelve trillion, one hundred two billion, one hundred twenty million, ten thousand, ninety-one".