Final answer:
Typing the command 'Get-Process -Id 22' in PowerShell will return information about the process with PID 22 if it exists, or an error if it does not.
Step-by-step explanation:
When you type the command Get-Process -Id 22 in the PowerShell command line, PowerShell will attempt to retrieve information about the process with the identifier (PID) 22 that is currently running on your system. If a process with that PID exists, it will display its details such as process name, CPU usage, memory allocation and more. Otherwise, if no process with that PID is found, an error will be returned stating that the process does not exist or cannot be found.