221 (CCXXI) ebile ngwaga wa go thoma ka Mošupologo, ngwaga wa bobedi ngwagengsome wa 220s, ngwaga wa bomasomepedi tee ngwagengkgolo wa Ngwagakgolo 3, le ngwaga wa bomakgolo pedi masomepedi tee ngwagengkete wa Ngwagakete 1.