I guess I just needed to see the layout of the numbers, Aldo, I'd expected them to be in the usual Model-Type-Code sequence. Model is 122432. Type is 0113-01. Code is 07101088. Here is the Operator's Manual:
http://bsintek.basco.com/BriggsDocumentDisplay/iorpAFJU0HCjhJvcv4.pdf

Here is the Illustrated Parts List:
http://bsintek.basco.com/BriggsDocumentDisplay/18kpALXJnfBhU7y.pdf

Date of manufacture is 10 October 2007.

As far as I know so far, Briggs makes all the Briggs branded small OHV engines, in its own plants in North America. It also makes all the Intek engines there, and all the single cylinder Vanguards. The multi-cylinder Vanguards are made in Japan. Your engine is identified as having been made in Plant 88, which did not exist when my list was created a few years ago.

I haven't previously seen a horizontal crankshaft small OHV Briggs engine, only vertical crankshaft ones. I believe your engine is sold under the Intek label. Don't be too alarmed by that: while the large Intek engines have their shortcomings, the small ones do not suffer from those faults.

If your engine will run properly with choke, but not otherwise, the mixture is lean. That will probably be either an intake air leak on the engine side of the carburetor, or a carburetor fault. If you have any reason to think it has been clouted hard enough to disturb the geometry between the carburetor and engine, I'd start with the intake connections rather than the carburetor. By the way, it is a Walbro LMS carburetor. The engine and carburetor are covered in detail in the Intek Single Cylinder manual, P/N 276781, which is in the manuals section. I'll be happy to help you with the diagnostics and repair of course, as usual.