216218059 has 2 divisors, whose sum is σ = 216218060. Its totient is φ = 216218058.

The previous prime is 216218017. The next prime is 216218069. The reversal of 216218059 is 950812612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216218059 - 2¹⁹ = 215693771 is a prime.

It is not a weakly prime, because it can be changed into another prime (216218069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108109029 + 108109030.

It is an arithmetic number, because the mean of its divisors is an integer number (108109030).

Almost surely, 2^216218059 is an apocalyptic number.

216218059 is a deficient number, since it is larger than the sum of its proper divisors (1).

216218059 is an equidigital number, since it uses as much as digits as its factorization.

216218059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 216218059 is about 14704.3551031659. The cubic root of 216218059 is about 600.2018385759.

The spelling of 216218059 in words is "two hundred sixteen million, two hundred eighteen thousand, fifty-nine".