What camera resolutions does Nokia Lumia 1520 feature?

Here are details about the Nokia Lumia 1520's camera sensors:
Rear Camera : 20.1 megapixel
Front Camera : 1.2 megapixel
Flash : Yes
Camera Options :
+ Autofocus
+ Continuous autofocus
+ Continuous shooting
+ Digital zoom
+ Dual capture
+ Exposure compensation
+ Face detection
+ Geotagging
+ ISO settings
+ Optical image stabilization
+ Self-timer
+ Touch focus
+ White balance settings
Slow Motion Video : No , 30.0 fps