Erik Balling and Henning Bahs originally planned to end their Olsen Gang series with a twelfth and last film in 1980 or 1981. However, Nordisk Film officials persuaded them to make a two-part film for the company's 75th anniversary in 1981. This finally resulted in this film and Olsen-banden over alle bjerge! (1981), which tell a coherent, three-hour-long story and were released two months apart.
The sign of Høje Nord insurances is an ice bear standing on a globe. This is the sign of Nordisk Film in real life.
The actor Sverre Wilberg, as the character of the sad, drunk, not-homesick Norwegian at the Airport, actually played the Norwegian version of Mortensen in the Norwegian versions of the Olsen-Banden movies.
The emblem of the Norje Bank in the film is in reality the emblem of the film company Nordisk Film.