12000220191 has 12 divisors (see below), whose sum is σ = 17347435560. Its totient is φ = 7993784880.

The previous prime is 12000220157. The next prime is 12000220223. The reversal of 12000220191 is 19102200021.

12000220191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12000220191 - 2¹³ = 12000211999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000220891) 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 in 11 ways as a sum of consecutive naturals, for example, 518200 + ... + 540861.

It is an arithmetic number, because the mean of its divisors is an integer number (1445619630).

Almost surely, 2^12000220191 is an apocalyptic number.

12000220191 is a deficient number, since it is larger than the sum of its proper divisors (5347215369).

12000220191 is a wasteful number, since it uses less digits than its factorization.

12000220191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060326 (or 1060323 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 12000220191 in words is "twelve billion, two hundred twenty thousand, one hundred ninety-one".