How do I redownload my apps on the iPhone 4 (ioS 6.0.1)?

[hugs1]

I recently restored my iPhone 4. I noticed that my apps from prior to the restore disappeared. I tried to redownload them in the Apps Store, but when I click Install, nothing happens. So I tried to download them on my iTunes App Store instead. However, I get an error that says "An unknown error occurred (11111)". How do I get my apps back?

Thanks in advance!