This property defines the Unicodes which belongs to Cuneiform Numbers block
Characters like 𒐀,𒐁,𒐂, etc. are listed under Cuneiform Numbers Block.
118 Characters are present in Cuneiform Numbers Block starting with the Unicode point U+12400 that represents the character 𒐀.
Currently, as per latest version 15.0.0, Unicode supports 328 number of Block. Here are a few examples - Latin Extended E,Adlam,Aegean Numbers, etc.