One of a and one of B is equal to one of 2011. How to find the type of A. B

One of a and one of B is equal to one of 2011. How to find the type of A. B

1/a+1/b=1/2011,
So (a + b) / (a * b) = 1 / 2011,
2011(a+b)=a+b
therefore
One is a = 2012, B = 2011 × 2012
One is when a = B