Hello kurapati Abhilash,

As you have secured 21000 rank in the ap EAMCET it is good . 

The admission you can get through the rank you have secured can be in top 20 engineering colleges of your area . 

Admission in universities is hard but you can definitely get seat in the top 20 engineering colleges (private)

All the best

Hey !

AP EAMCET cutoffs can be extremely different for different categories and courses for the same college. Like for CSE and a general category candidate , the cutoff rank xan be 1k while for the same college and a branch like EIE  and st candidate , thw cutoff rank can be 50k. So just a mere rank is not enough to decide the college.

I request you to mention your category and preferred branch or you can also use AP EAMCET college predictor tool to predict the college for you.:

https://www.careers360.com/ap-eamcet-college-predictor

Best wishes!