12199199 has 2 divisors, whose sum is σ = 12199200. Its totient is φ = 12199198.

The previous prime is 12199189. The next prime is 12199211. The reversal of 12199199 is 99199121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12199199 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12199189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6099599 + 6099600.

It is an arithmetic number, because the mean of its divisors is an integer number (6099600).

Almost surely, 2^12199199 is an apocalyptic number.

12199199 is a deficient number, since it is larger than the sum of its proper divisors (1).

12199199 is an equidigital number, since it uses as much as digits as its factorization.

12199199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13122, while the sum is 41.

The square root of 12199199 is about 3492.7351746160. The cubic root of 12199199 is about 230.2027135328.

The spelling of 12199199 in words is "twelve million, one hundred ninety-nine thousand, one hundred ninety-nine".