Question regarding transistor codes
A simple google search of "KSP 2222A" would have returned on the first line this datasheet, which clearly states what a KSP 2222A is.



It's basically the 2N2222A in plastic package (exactly the same specs), therefore is an NPN.

The 1426 is likely a production date-code. 2014, 26th week.

Note:
The 2N2222 (without A), instead, has smaller ratings (breakdown voltages) and performance (smaller fT) with respect to 2N2222A and its plastic version PN2222A-KSP2222A.