216226226 has 8 divisors (see below), whose sum is σ = 331240320. Its totient is φ = 105812788.

The previous prime is 216226217. The next prime is 216226229. The reversal of 216226226 is 622622612.

It is a happy number.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (216226229) 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, 1150046 + ... + 1150233.

It is an arithmetic number, because the mean of its divisors is an integer number (41405040).

Almost surely, 2^216226226 is an apocalyptic number.

216226226 is a deficient number, since it is larger than the sum of its proper divisors (115014094).

216226226 is a wasteful number, since it uses less digits than its factorization.

216226226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2300328.

The product of its digits is 6912, while the sum is 29.

The square root of 216226226 is about 14704.6328073842. The cubic root of 216226226 is about 600.2093954326.

Adding to 216226226 its reverse (622622612), we get a palindrome (838848838).

The spelling of 216226226 in words is "two hundred sixteen million, two hundred twenty-six thousand, two hundred twenty-six".