There is no system called "Arabic numbers". XII can be defined by a set of Arabic NUMERALS, but not by a single character.
Improved Answer:-
The Roman numerals of XII equals 12 in Hindu-Arabic numerals.
12
In Roman numeral representation, the number 12 is written as "XII".
In Roman numerals xii or XII are both equivalent to 12
XII in Roman numerals is 12 in Arabic numerals.
If you mean the Roman numeral of DCLXII then as an Hindu-Arabic numeral it is 662
12
In Roman numeral representation, the number 12 is written as "XII".
In Roman numerals xii or XII are both equivalent to 12
XII in Roman numerals is 12 in Arabic numerals.
If you mean the Roman numeral of DCLXII then as an Hindu-Arabic numeral it is 662
The number 12 is represented by the Roman numeral XII
It is XII
12 = XII
xii or XII = 12
XII is the Roman numeral for 12.
XII
On Converting between Arabic and Roman Numbers ,we get : dec in roman numerals is : XII