Hexadecimal value print

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C

I used the following code

main()
{
	int i=101;
	printf("%X",i);
}

to print the hexadecimal value it prints 65 correctly but when I add an extra 0 to the left i.e

int i=0101;

the output changes to 41, when you take a double look it is 65 in hexadecimal, why is that why the double conversion?

What I have tried:

the code was run for both the integer values i.e i=0101 and i=101;