22 refers to the specific episode in the series.
The breakdown of the filename reveals the following "solid" technical and content details: gateanime-com-rottmnt-22-ardub-1080fhd-mp4
ardub indicates that this file features the Arabic Dubbed audio track rather than the original English or a subtitled version. 22 refers to the specific episode in the series
gateanime-com (GateAnime) is a popular platform specializing in providing anime and animated series with Arabic subtitles or dubbing. gateanime-com-rottmnt-22-ardub-1080fhd-mp4