12001201001191 has 4 divisors (see below), whose sum is σ = 12256545703392. Its totient is φ = 11745856298992.

The previous prime is 12001201001161. The next prime is 12001201001197. The reversal of 12001201001191 is 19110010210021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12001201001191 - 2⁷ = 12001201001063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001201001197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127672351030 + ... + 127672351123.

It is an arithmetic number, because the mean of its divisors is an integer number (3064136425848).

Almost surely, 2^{12001201001191} is an apocalyptic number.

12001201001191 is a deficient number, since it is larger than the sum of its proper divisors (255344702201).

12001201001191 is an equidigital number, since it uses as much as digits as its factorization.

12001201001191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255344702200.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 12001201001191 in words is "twelve trillion, one billion, two hundred one million, one thousand, one hundred ninety-one".