221041222 has 8 divisors (see below), whose sum is σ = 342257472. Its totient is φ = 106955400.

The previous prime is 221041207. The next prime is 221041229. The reversal of 221041222 is 222140122.

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

It is a junction number, because it is equal to n+sod(n) for n = 221041196 and 221041205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221041229) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1782529 + ... + 1782652.

It is an arithmetic number, because the mean of its divisors is an integer number (42782184).

Almost surely, 2^221041222 is an apocalyptic number.

221041222 is a deficient number, since it is larger than the sum of its proper divisors (121216250).

221041222 is a wasteful number, since it uses less digits than its factorization.

221041222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3565214.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 221041222 is about 14867.4551285686. The cubic root of 221041222 is about 604.6319478958.

Adding to 221041222 its reverse (222140122), we get a palindrome (443181344).

The spelling of 221041222 in words is "two hundred twenty-one million, forty-one thousand, two hundred twenty-two".