16212218 has 16 divisors (see below), whose sum is σ = 27444960. Its totient is φ = 7114800.

The previous prime is 16212199. The next prime is 16212233. The reversal of 16212218 is 81221261.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16212193 and 16212202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12068 + ... + 13343.

It is an arithmetic number, because the mean of its divisors is an integer number (1715310).

Almost surely, 2^16212218 is an apocalyptic number.

16212218 is a deficient number, since it is larger than the sum of its proper divisors (11232742).

16212218 is a wasteful number, since it uses less digits than its factorization.

16212218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25453.

The product of its digits is 384, while the sum is 23.

The square root of 16212218 is about 4026.4398666812. The cubic root of 16212218 is about 253.0933950887.

Adding to 16212218 its reverse (81221261), we get a palindrome (97433479).

The spelling of 16212218 in words is "sixteen million, two hundred twelve thousand, two hundred eighteen".