216238111 has 8 divisors (see below), whose sum is σ = 226461024. Its totient is φ = 206083680.

The previous prime is 216238109. The next prime is 216238133. The reversal of 216238111 is 111832612.

216238111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 216238111 - 2¹ = 216238109 is a prime.

It is a super-3 number, since 3×216238111³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216268111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10600 + ... + 23341.

It is an arithmetic number, because the mean of its divisors is an integer number (28307628).

Almost surely, 2^216238111 is an apocalyptic number.

216238111 is a deficient number, since it is larger than the sum of its proper divisors (10222913).

216238111 is a wasteful number, since it uses less digits than its factorization.

216238111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34241.

The product of its digits is 576, while the sum is 25.

The square root of 216238111 is about 14705.0369261692. The cubic root of 216238111 is about 600.2203921837.

The spelling of 216238111 in words is "two hundred sixteen million, two hundred thirty-eight thousand, one hundred eleven".