"Our petition has gathered 22,134,465 signatures," Tamarod spokesman Mahmud Badr told journalists on the eve of Sunday's first anniversary of Morsi's inauguration when it has called for nationwide protests.
This figure is higher than the number of people who voted for Morsi in last year's presidential election -- 13.23 million, or 51.7 percent of the ballots cast.
Previously, Tamarod said 15 million people in Egypt had signed the petition demanding that the president step aside.