Alaska is about 12 times bigger than North Korea.

North Korea is approximately 120,538 sq km, while Alaska is approximately 1,481,348 sq km, making Alaska 1,129% larger than North Korea. Meanwhile, the population of North Korea is ~26.0 million people (25.2 million fewer people live in Alaska).
Tip: This to-scale comparison of North Korea vs. Alaska uses the Mercator projection, which distorts the size of regions near the poles.