Can my floor hold 2100 lbs of dead load?
You need a site visit from a qualified person to determine if your floor system can safely carry the load, but given the span you gave and the information here, the answer is no.
However, you may be able to easily install sufficient intermediate support.
To get a line on feasibility before reaching out to professionals, I'd start by calling the manufacturer and talk with their engineers to see if they have a technical manual detailing bearing requirements. Don't be surprised if it's all about commercial floor systems. While you're at it, get the exact weight.
Next, call the city and discuss with a building inspector.
Given the weight you're guessing, at nearly 70psf uniform load (and an unknown concentrated load), it's not just the depth of the joists you need to consider. You need to evaluate the entire flooring assembly against the concentration of the load.

Assuming the load has full continuous bearing, not on point loads (ie. supported by feet or by a perimeter bar).
Assuming this is piece built.
Taking into consideration comparisons of some common residential construction design loads, a 6&quot; thick concrete foundation wall is typically designed to carry a dead load of 75psf. Garage slabs are typically designed with 50psf uniform live load, 1,500 to 2,000 concentrated load, in mind.

Good luck and have fun!