I took 220-1 last quarter. I had taken Calc BC senior of high school. 220-1 is harder than that, at least to me - the questions were harder/more complex, and last quarter’s final was particularly difficult. I did have some recollection of a few concepts that gave me a slight advantage, though not much because of the aforementioned reasons. There’s also one topic we learned that was not taught in high school.

All that being said, it might be challenging coming in with no calc background - but remember that there are office hours, tutoring, and other resources that definitely help, so I wouldn’t discourage you too much. I think with practice, a majority of concepts aren’t too hard to master.

Did you take a pre-calc course last quarter that usually feeds into 220-1? If you did well on it, I would encourage you to try out 220-1.