The telephone number 18120821858 appears in an episode of the children’s show Babybus. In this episode Rudolph gets lost in a shopping centre.
Fortunately he remembers some advice he was given from a teacher one day. That advice was to find a security guard and call his parents. Fortunately he knows his Dad’s number 18120821858 off by heart. He calls his dad and his dad then speaks to the security guard who tells Rudolph’s dad exactly where he is.