Data type for Number(22)

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Data type for Number(22)

I have a column defined as number(22) in oracle. I need to load the data from oracle to Teradata. What will be suitable coulun data type for Teradata? Can I define something like float(22). Is there any restrcition that teradara can't store more than 18 digits for numbers (For Precision)? If so any ideas for this?