216216199 has 8 divisors (see below), whose sum is σ = 223936560. Its totient is φ = 208513536.

The previous prime is 216216193. The next prime is 216216239. The reversal of 216216199 is 991612612.

216216199 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 a cyclic number.

It is not a de Polignac number, because 216216199 - 2³ = 216216191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216216191) 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, 23527 + ... + 31399.

It is an arithmetic number, because the mean of its divisors is an integer number (27992070).

Almost surely, 2^216216199 is an apocalyptic number.

216216199 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

216216199 is a deficient number, since it is larger than the sum of its proper divisors (7720361).

216216199 is an equidigital number, since it uses as much as digits as its factorization.

216216199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8849.

The product of its digits is 11664, while the sum is 37.

The square root of 216216199 is about 14704.2918564615. The cubic root of 216216199 is about 600.2001175068.

The spelling of 216216199 in words is "two hundred sixteen million, two hundred sixteen thousand, one hundred ninety-nine".