Estimated diameter1.2 trillion m
3.1 billionSupertankers
11.7 sextillionHydrogen atoms
Roughly 887 solar diameters
The world's least useful encyclopedia

Photo from Wikimedia Commons
A red supergiant on the brink of a supernova/Stars
Betelgeuse is a red supergiant star in the constellation Orion, one of the largest and most luminous stars visible to the naked eye. It is roughly 700 light-years from Earth and could explode as a supernova within the next 100,000 years. Its diameter is large enough that if placed at the centre of our solar system, its surface would extend past the orbit of Jupiter.
Roughly 887 solar diameters
About 11 solar masses
About 196,000 times solar luminosity
About 653 light-years