Mauritania is about 2,342,500 times bigger than Holy See (Vatican City).

Holy See (Vatican City) is approximately 0 sq km, while Mauritania is approximately 1,030,700 sq km, making Mauritania 234,249,900% larger than Holy See (Vatican City). Meanwhile, the population of Holy See (Vatican City) is ~1,000 people (4.2 million more people live in Mauritania).
Tip: This to-scale comparison of Holy See (Vatican City) vs. Mauritania uses the Mercator projection, which distorts the size of regions near the poles.
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