22 standard letters, four of which have a different form at the end of a word than at the beginning and middle. There is a calligraphy, and in fact I write that calligraphy for a living (Torah scrolls, mezuzot, etc.). But there is also a calligraphic way of writing Latin lettering as well. Nothing at all like Oriental languages. Arabic writing is more complex and ornate than Hebrew.
Five letters, I mean, with a different final form.