Planets normally form gradually from the disk of dust around a star. But the same thing could happen around black holes, forming thousands of super heavy planets
Source:
https://www.newscientist.com/article/2217144-some-planets-may-orbit-a-supermassive-black-hole-instead-of-a-star/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home