>>1621202100L is a lot of shit. Like a lot of shit. More than your torso volume for sure, unless you happen to be morbidly obese and then incapable of carrying that much shit anyway.
As for how much all that shit will weigh? That depends on what that shit is. You could load it up with 100L of cotton, and probably still weigh under two lbs. If you fill it with 100L of actual literal shit, which would be about 88 lbs of shit.
There's your literal answer.