This page lists the 2253 forms of the word “kauppa”, Finnish for “shop”. Finnish is highly agglutinative so having a lot of forms for each word is expected . But this is rather more than most people would predict I think. It isn’t as bad as you think since Finnish suffixes embody concepts most languages use several words for. i.e. Finnish uses longer words in most sentences but there are fewer of them.
This is cleverly embodied in the quote from this site: “Why lose time and energy saying ’the committee that takes care of negotiations concerning the truce’ when you can use a simple little word like ‘aseleponeuvottelutoimikunta?’”