My boys seem to hit difficult phases at their 1/2 birthdays, so at 1.5, 2.5, 3.5, etc for a month or so around that time they hit a difficult phase... hitting, sassing, not obeying, etc. It definentely hits around thsoe 1/2 birthdays.
ANYWAY, I would watch his diet... too much sugar, red dye, over processed foods, really have a huge affect on children. You really have to be careful at what goes into their little bodies, as they react to things so much differently than adults, and you certainly don't want them to build up a tolerance to it. Stay away from the junk foods, overprocessed cereals, sugars, dye's, etc. Also watch his dairy intake too.... that could have a big effect as well.
Otherwise, sounds like he needs more time to run and jump and be a boy. Take him to the park at the times he's most active, let him run outside, adn give him lots of structure. AT this time we do this ,at this time we do this... etc. And make sure he has SOMETHING to do, don't expect a 22mo old to entertain himself all the time. Give him chores, tasks, and make sure he knows specifics of what is going on when. Like when we are otuside, we will play this game.
Sounds like he needs more structure, more time to run and burn it off, and maybe a diet change.