1. A mobile terminal device comprising: an event detection unit that detects an occurrence of a predetermined event; a notification unit that makes a notification of the occurrence of the event to a user of the mobile terminal device; an operating unit that receives a response operation with respect to the notification performed by the user of the mobile terminal device; a movement cycle acquisition unit that acquires a pattern cycle of spatial movement of the mobile terminal device; and a learning unit that learns a notification timing and a notification time based on the pattern cycle and a result of whether the operating unit has received the response operation, the notification unit making the notification based on the notification timing and the notification time learned by the learning unit.