12102002191 has 2 divisors, whose sum is σ = 12102002192. Its totient is φ = 12102002190.

The previous prime is 12102002167. The next prime is 12102002203. The reversal of 12102002191 is 19120020121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12102002191 - 2⁹ = 12102001679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12102002791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051001095 + 6051001096.

It is an arithmetic number, because the mean of its divisors is an integer number (6051001096).

Almost surely, 2^12102002191 is an apocalyptic number.

12102002191 is a deficient number, since it is larger than the sum of its proper divisors (1).

12102002191 is an equidigital number, since it uses as much as digits as its factorization.

12102002191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 12102002191 in words is "twelve billion, one hundred two million, two thousand, one hundred ninety-one".