The vigintyllion is equal to \(10^{2^{22}}=10^{4,194,304}\) in the myriad system[1][2], or 10 squared 22 times.
Sources
See also
Myriad System Numbers myllion · byllion · tryllion · quadryllion · quintyllion · decyllion · undecyllion ·vigintyllion · trigintyllion · centyllion · yoctyllion · latinlatinlatinbyllionyllionyllionyllion