The monthlong "Operation Broken Heart" took place in May and involved dozens of local, state and federal authorities who worked in concert.
The authorities told about the arrests yesterday.
The Los Angeles Regional Internet Crimes Against Children task force had its investigators pretend to be 12 to 14-year-old children online and arrested many individuals when they showed up to engage in sex acts with children.
The number of arrests and potential allegations are expected to grow as forensic investigators continue their analysis of seized evidence.