This property defines the Unicodes which have numeric value as 20
Characters like ፳,⑳,⒇, etc. are listed under 20 Numeric Value.
36 Characters are present in 20 Numeric Value starting with the Unicode point U+1373 that represents the character ፳.
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.