221104226 has 16 divisors (see below), whose sum is σ = 388281600. Its totient is φ = 92447520.

The previous prime is 221104217. The next prime is 221104231. The reversal of 221104226 is 622401122.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 221104198 and 221104207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192026 + ... + 193173.

It is an arithmetic number, because the mean of its divisors is an integer number (24267600).

Almost surely, 2^221104226 is an apocalyptic number.

221104226 is a deficient number, since it is larger than the sum of its proper divisors (167177374).

221104226 is a wasteful number, since it uses less digits than its factorization.

221104226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385249.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 221104226 is about 14869.5738338394. The cubic root of 221104226 is about 604.6893890857.

Adding to 221104226 its reverse (622401122), we get a palindrome (843505348).

The spelling of 221104226 in words is "two hundred twenty-one million, one hundred four thousand, two hundred twenty-six".