Could I use Powerbank 5v 2.1 amp 16000 mAh for Arduino?

I just want to know if is safe or not as I am planning to run my Arduino with this power bank with 5v 2.1 amp 16000 mAh output. If this could damage the Arduino board or not.

It should work fine.

Thanks, so this means the arduino will run comfortably with this powerbank without causing any damage?

Yes. An arduino doesn't need 2+ amps, but the way current works, as long as the voltage is 5V, it will only take what it needs. A 16000mAh battery should power an arduino for about a week (except that the number is probably "optimistic")

Thanks you are very helpful.