12190109 has 2 divisors, whose sum is σ = 12190110. Its totient is φ = 12190108.

The previous prime is 12190081. The next prime is 12190117. The reversal of 12190109 is 90109121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9796900 + 2393209 = 3130^2 + 1547^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12190109 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12190709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6095054 + 6095055.

It is an arithmetic number, because the mean of its divisors is an integer number (6095055).

Almost surely, 2^12190109 is an apocalyptic number.

It is an amenable number.

12190109 is a deficient number, since it is larger than the sum of its proper divisors (1).

12190109 is an equidigital number, since it uses as much as digits as its factorization.

12190109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 12190109 is about 3491.4336596877. The cubic root of 12190109 is about 230.1455222746.

The spelling of 12190109 in words is "twelve million, one hundred ninety thousand, one hundred nine".