Yes, a Pitcher pitching a Baseball in a Major League Baseball game and if the pitched ball ends up hitting any part of the batter who is at the plate regardless of whether it's his uniform, his shoes, his battling gloves or even his helmet it would be ruled as the ball hitting him and therefore it would be credited as a Hit by Pitch and the umpire would award you first base automatically.
There is no rule that governs how many hit batsman a pitcher can have. In practically, the team's manager may remove him if the hit batters become excessive...and the umpire may eject the pitcher if he feels the pitcher is intentionally trying to throw at batters.
This is the pitcher
A perfect game for a pitcher is one in which the pitcher faces the minimum of 27 batters and does not let any of them get on-base.
The pitcher that struck out the most batters in history is Nolan Ryan. He has struck out 5,714 batters during his career from September 11, 1966 until September 22, 1993.