21 US pints in US customary teaspoons
Result
The conversion result is: 21 US pints is equivalent to 2016 US customary teaspoons.[1]
Conversion formula
How to convert 21 US pints to US customary teaspoons?
We know (by definition) that: 1 uspint ≈ 96 usteaspoon.
We can set up a proportion to solve for the number of US customary teaspoons.
1 uspint / 21 uspint ≈ 96 usteaspoon / x usteaspoon
Now, we cross multiply to solve for our unknown x:
x usteaspoon ≈ (21 uspint / 1 uspint) * 96 usteaspoon → x usteaspoon ≈ 2016 usteaspoon
Conclusion:
21 uspint ≈ 2016 usteaspoon

Conversion in the opposite direction
The inverse of the conversion factor is that 1 US customary teaspoon is equal to 0.000496031746031746 times 21 US pints.
It can also be expressed as: 21 US pints is equal to 1 / 0.000496031746031746 US customary teaspoons.
Approximation
An approximate numerical result would be: twenty-one US pints is about two thousand and sixteen US customary teaspoons, or alternatively, a US customary teaspoon is about zero times twenty-one US pints.
Footnotes
[1] The precision is 15 significant digits (fourteen digits to the right of the decimal point).
Results may contain small errors due to the use of floating point arithmetic.