Did the Prophet (s) really say there will be 12 Caliphs after him? Sunni references?

November 23, 2015Ahlul Bayt, Imamah (Divine Leadership), Shia/Sunni

Question:

Is it true that there is a hadith from the Holy Prophet(s) that he said that there will be 12 caliphs or rulers after him? If it does exist, is it authentic, and does it exist in both Shia and Sunni books of narration?

Please provide me with some of the main Sunni references if possible. Also, what do Sunni Muslims say about this hadith if it exists in their books?