change project name

Is it possible to change the project name ?

I would like to change the apk name who appear below the icon when the apk is installed in a android device.

Yes it is possible to change the project name with AI2.      Project >  Save project as ...

If that is not what you want to do, you should learn to search in the forum as third party (non AI2) ways of doing so have been discussed MANY times.

You could  search in the forum using the Search for topics box to the right of the colorful google at the top of this page  using terms like  change apk  ;   change project, third party etc.