I m just wanted to find out some info about numbered domains without any letters in it. Are any particular numbers worth more then others

For double digit domains, are repeting numbered domains more valuable, eg. 22 is better than 20?

I think 1 is better then other numbers.

I doubt there is much resale value in most numbers. You might find a few that could be marketable to specific niches i.e. 69 – 420 – 666 etc.

But if you owned NN.com, NNN.com & even NNNN.com, they are worth money as
compare to numbers

Not sure about .info extension but they are definitely worth good bucks if they are .com. One thing is for sure, you’ll definitely get more than reg fee for these, probably a lot more than reg fee.