Excel – Fit column width to text shortcut

There are two points here; containing and displaying.

Per Microsoft 32,767 characters is the max a cell can contain. So yes you can fit 10,110 characters in the cell.

As allready discussed in other answers, no you can not display that many characters in a fashion that will be readable.

Reference http://office.microsoft.com/en-us/excel-help/excel-specifications-and-limits-HP010073849.aspx

Normally you only see this when the worksheet/workbook is protected. Try it with a macro. For example:

Sub Test()
    Columns("A:C").ColumnWidth = 20
End Sub

When protected then you get a message that it is unable to set the ColumnWidth property.