Files are often split into parts to make them easier to upload to cloud storage or send via email when they exceed size limits. How to Open and Extract It
The .part3.rar extension indicates this is the third piece of a larger file that was split during compression.
The string 20221202 within the filename likely represents a date (December 2, 2022), suggesting the file was created or archived on that day.
LibGuides: Data Management Planning: File Naming and Formats
You cannot open part3 by itself; you must have all the pieces of the set (e.g., part1 , part2 , part3 , etc.) in the same folder.