If you're comfortable working with fractions and decimals, then there an infinite number of possible answers.
If you just want to stick to whole numbers, then there are only four possible answers:
1 x 33 3 x 11 -1 x -33 -3 x -11 .
(Of course, each pair can be turned around and multiplied in the other direction. When you're multiplying, it doesn't matter in what order you line up the factors.)
