This property defines the Unicodes which have numeric value as 12
Characters like Ⅻ,ⅻ,⑫, etc. are listed under 12 Numeric Value.
9 Characters are present in 12 Numeric Value starting with the Unicode point U+216B that represents the character Ⅻ.
Currently, as per latest version 15.0.0, Unicode supports 150 number of Numeric Value. Here are a few examples - 0,1,1/10, etc.