216422214 has 24 divisors (see below), whose sum is σ = 441199752. Its totient is φ = 70774080.

The previous prime is 216422201. The next prime is 216422329. The reversal of 216422214 is 412224612.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10434 + ... + 23274.

It is an arithmetic number, because the mean of its divisors is an integer number (18383323).

Almost surely, 2^216422214 is an apocalyptic number.

216422214 is an abundant number, since it is smaller than the sum of its proper divisors (224777538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216422214 is a wasteful number, since it uses less digits than its factorization.

216422214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12952 (or 12899 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

The square root of 216422214 is about 14711.2954562132. The cubic root of 216422214 is about 600.3906844431.

Adding to 216422214 its reverse (412224612), we get a palindrome (628646826).

The spelling of 216422214 in words is "two hundred sixteen million, four hundred twenty-two thousand, two hundred fourteen".