216222242 has 8 divisors (see below), whose sum is σ = 341403600. Its totient is φ = 102421044.

The previous prime is 216222229. The next prime is 216222257. The reversal of 216222242 is 242222612.

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

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, 2844992 + ... + 2845067.

It is an arithmetic number, because the mean of its divisors is an integer number (42675450).

Almost surely, 2^216222242 is an apocalyptic number.

216222242 is a deficient number, since it is larger than the sum of its proper divisors (125181358).

216222242 is a wasteful number, since it uses less digits than its factorization.

216222242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5690080.

The product of its digits is 1536, while the sum is 23.

The square root of 216222242 is about 14704.4973392496. The cubic root of 216222242 is about 600.2057090945.

Adding to 216222242 its reverse (242222612), we get a palindrome (458444854).

The spelling of 216222242 in words is "two hundred sixteen million, two hundred twenty-two thousand, two hundred forty-two".