  Motivated by recent interest in their applications, we report a systematic
study of Cs atomic properties calculated by a high-precision relativistic
all-order method. Excitation energies, reduced matrix elements, transition
rates, and lifetimes are determined for levels with principal quantum numbers
$n \leq 12$ and orbital angular momentum quantum numbers $l \leq 3$.
Recommended values and estimates of uncertainties are provided for a number of
electric-dipole transitions and the electric dipole polarizabilities of the
$ns$, $np$, and $nd$ states. We also report a calculation of the electric
quadrupole polarizability of the ground state. We display the dynamic
polarizabilities of the $6s$ and $7p$ states for optical wavelengths between
1160 nm and 1800 nm and identify corresponding magic wavelengths for the
$6s-7p_{1/2}$, $6s-7p_{3/2}$ transitions. The values of relevant matrix
elements needed for polarizability calculations at other wavelengths are
provided.
