I guess everybody knows this, but 112 is the emergency telephone number in a lot more countries than "just" Denmark [1].
According to Wikipedia, it even works in the US if dialed from a cell phone, by being forwarded to 911 by the network. That I didn't know, since the "cultural presence" of 911 is pretty big even over here in Sweden.
It's part of mobile phone standards to accept several emergency numbers (at least 112 and 911, I think 999 as well), and translate to the local number. That's not always doable with landlines as it might conflict with a longer number, and some countries have short numbers that might conflict as well, but I think that's rare too.
According to Wikipedia, it even works in the US if dialed from a cell phone, by being forwarded to 911 by the network. That I didn't know, since the "cultural presence" of 911 is pretty big even over here in Sweden.
[1]: https://en.wikipedia.org/wiki/112_(emergency_telephone_numbe...