An information processing apparatus includes a display section, a touch panel, an acceptance section, a communication section, and a communication control section. The display section is capable of displaying a first operating image in which a plurality of first operating keys are arranged. The communication section is capable of communicating with a mobile terminal device capable of displaying a second operating image in which one or more second operating keys operable in combination with the first operating keys are arranged. The communication control section allows the communication section to receive from the mobile terminal device operating information indicating that one of the second operating keys has been selected. When the one first operating key is selected while the communication section receives the operating information, the acceptance section accepts an instruction corresponding to a combination of the selected first operating key and the second operating key indicated in the operating information.