Hello tarun,

22,000 rank is not bad it's quite good rank.

Branch wise cutoff are as follows for IIIT-:

1. CS with Business-: 1,508
2. CSE -: 7,100 (IIIT manipur)
3. Electronic-: 6,881 (kalyani)
4. Mechanical-: 6,786
5. Information technology-: 5,796

These are some low cutoff for your question.

Unfortunately it's not possible for you to get seat in iiit through EWS catagory .