That would make it a SU-24. SU-22 only has one pilot.
When the improved Su-17UM3
two-seater was introduced, an export version with the R29BS-300 engine was built as the "
Su-22UM3". Only 9 were delivered because the AL-21F-3 engine was finally released for export, and so export production moved on to the "Su-22UM3K", which was almost identical to the Su-17UM3. 41 were built. The Su-22UM3 and Su-22UM3K both retained the NATO reporting name of "Fitter-G".
http://www.airvectors.net/avsu17_2.htmlThere were eventually 335 two-seaters produced.