I'm curious how other INTPs react to receiving compliments, but this is open to other types if they wish to participate. I made a point to add "in person" since receiving compliments online is totally different and allows one much more time to formulate a response and conceal their immediate, involuntary reactions. I also added "genuine" to avoid confusion with insincere compliments or ones that seem insincere based on delivery, facial expressions, body language, broader context, etc.
My reaction to compliments:
When I was younger I used to react by simply turning bright red, possibly adding an awkward "Erm, thank you" after a long pause. These days I've noticed that I tend to push them aside reflexively with quick-witted humor or by feigning anger (in an obviously facetious way) that takes the focus away from myself.