Subluxation: Partial dislocation of a joint. A complete dislocation is a luxation.
The largest number of items per content database that has been tested on SharePoint Server 2013 is 60 million items, including documents and list items. If you plan to store more than 60 million items in SharePoint Server 2013, you must deploy multiple content databases.
You should reconsider this design. SharePoint is not built to handle this amount of folders with unique role assignments in one document library. I would recommend that you take a look at a design where you instead of using folders use Site Collections/Sites/Document Libraries as your hierarchy.