Allen Iverson's Ex-Wife -- I Want $1.2 MILLION RIGHT NOW

Allen Iverson's ex-wife is sick and tired of dragging him to court to squeeze out child support ... she's asking a judge to make him cough up the next 13 years worth RIGHT NOW -- a cool $1.2 MILLION.

TMZ broke the story ... after the couple's nasty divorce Iverson was ordered to pay $8000/month in child support for their 5 kids. Problem is, Tawanna has gone to court on numerous occasions because A.I. won't pay.

It came to a head in July when a judge threatened Iverson with jail, unless he forked over $40,000 in back support -- which he did. But Tawanna says she doesn't want to keep running into the same problem.

On August 1st she filed docs asking a judge to make A.I. cover ALL the support through October 2026 (when their youngest turns 18). After the math, it comes to $1,272,000 ... which Tawanna wants put in a trust for the children.