216219 has 4 divisors (see below), whose sum is σ = 288296. Its totient is φ = 144144.

The previous prime is 216217. The next prime is 216233. The reversal of 216219 is 912612.

216219 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 216219 - 2¹ = 216217 is a prime.

It is a super-2 number, since 2×216219² = 93501311922, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

216219 is strictly pandigital in base 7.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 216195 and 216204.

It is not an unprimeable number, because it can be changed into a prime (216211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36034 + ... + 36039.

It is an arithmetic number, because the mean of its divisors is an integer number (72074).

2²¹⁶²¹⁹ is an apocalyptic number.

216219 is a deficient number, since it is larger than the sum of its proper divisors (72077).

216219 is an equidigital number, since it uses as much as digits as its factorization.

216219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72076.

The product of its digits is 216, while the sum is 21.

The square root of 216219 is about 464.9935483423. The cubic root of 216219 is about 60.0202709285.

It can be divided in two parts, 216 and 219, that added together give a triangular number (435 = T₂₉).

The spelling of 216219 in words is "two hundred sixteen thousand, two hundred nineteen".