If a star is shown to be 33.11 trillion kilometers away, how many light years would that be?

3.5

Explanation:

After reading your question, I went and looked on line for a definition of 'light year',

since its getting late and I didn't feel like calculating it.

The definition I found is:       1 light year  =  9.4605284 x 10¹⁵ meters

OK.    1 trillion = 1 x 10¹² .

Also,1 kilometer = 1,000 meters,

so 1 trillion kilometers = 1 x 10¹⁵ meters.

And we're ready now to find the number you want.

       33.11 x 10¹⁵ meters / 9.4605284 x 10¹⁵ meters = 3.5 light years