216090011 has 2 divisors, whose sum is σ = 216090012. Its totient is φ = 216090010.

The previous prime is 216089989. The next prime is 216090019. The reversal of 216090011 is 110090612.

216090011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216090011 - 2⁶ = 216089947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (216090019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108045005 + 108045006.

It is an arithmetic number, because the mean of its divisors is an integer number (108045006).

Almost surely, 2^216090011 is an apocalyptic number.

216090011 is a deficient number, since it is larger than the sum of its proper divisors (1).

216090011 is an equidigital number, since it uses as much as digits as its factorization.

216090011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 216090011 is about 14700.0003741497. Note that the first 3 decimals coincide. The cubic root of 216090011 is about 600.0833319443.

The spelling of 216090011 in words is "two hundred sixteen million, ninety thousand, eleven".