12282191 has 2 divisors, whose sum is σ = 12282192. Its totient is φ = 12282190.

The previous prime is 12282163. The next prime is 12282199. The reversal of 12282191 is 19128221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12282191 - 2²² = 8087887 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12282191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12282199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6141095 + 6141096.

It is an arithmetic number, because the mean of its divisors is an integer number (6141096).

Almost surely, 2^12282191 is an apocalyptic number.

12282191 is a deficient number, since it is larger than the sum of its proper divisors (1).

12282191 is an equidigital number, since it uses as much as digits as its factorization.

12282191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 26.

The square root of 12282191 is about 3504.5956970812. The cubic root of 12282191 is about 230.7235625500.

The spelling of 12282191 in words is "twelve million, two hundred eighty-two thousand, one hundred ninety-one".