It is: 11 and 66/1000 which can be simplified to 11 and 33/500
Eleven and eleven thousandths.
I would write it as either: eleven point zero zero one or eleven and one thousandth
5.011
Eleven thousandths.
11.0011
eleven ten thousandths
.011
11.00012
Six and eleven thousandths.
eleven thousandths.
Eleven and thirty-seven thousandths.
One hundred eleven and one hundred eleven thousandths.