216212006 has 8 divisors (see below), whose sum is σ = 338418864. Its totient is φ = 103405720.

The previous prime is 216211997. The next prime is 216212021. The reversal of 216212006 is 600212612.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2350085 + ... + 2350176.

It is an arithmetic number, because the mean of its divisors is an integer number (42302358).

Almost surely, 2^216212006 is an apocalyptic number.

216212006 is a deficient number, since it is larger than the sum of its proper divisors (122206858).

216212006 is a wasteful number, since it uses less digits than its factorization.

216212006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4700286.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 216212006 is about 14704.1492783500. The cubic root of 216212006 is about 600.1962376628.

Adding to 216212006 its reverse (600212612), we get a palindrome (816424618).

The spelling of 216212006 in words is "two hundred sixteen million, two hundred twelve thousand, six".