Hardeep Hunjan was convictedof murder earlier this week following the death of 13-month-old Noah Serra-Morrison, who suffered15 fractures to his body, including a six-inch wound across his skull.
He was sentenced to serve a minimum of 23 years in jail at Luton Crown Court on Friday.
Noah's mother, 22-year-oldRonnie Tayler-Morrison, was cleared of murder but, along with Hunjan, jailed for six-and-a-half yearsfor causing or allowing the death of a child and of cruelty to a child under 16.
"But at some stage you took hold of Noah and in addition to punching him to his head, you swung him into one of the walls with sufficient force to cause a fracture to his skull and all four of his limbs," Baker said.
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The couple had claimed that Noah injured himself falling from his cot, a claim prosecutors said was implausible during the trial at Luton Crown Court in the east of England.
"This has truly been one of the most shocking and sickening cases of violence we have ever come across," Bedfordshire Police said.
The trial heard Noah was subjected to horrific and deliberate abuse for weeks before he died.
A post-mortem examination revealed that he suffered fractures to an arm and leg around a week before his death, and similar injuries to an arm and leg between four and six weeks before he died - 15 fractures in total, along with bruising over his entire body.