404224444221 has 32 divisors (see below), whose sum is σ = 582312665088. Its totient is φ = 247944984000.

The previous prime is 404224444133. The next prime is 404224444237. The reversal of 404224444221 is 122444422404.

It is not a de Polignac number, because 404224444221 - 2⁷ = 404224444093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404224444121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64292140 + ... + 64298426.

It is an arithmetic number, because the mean of its divisors is an integer number (18197270784).

Almost surely, 2^404224444221 is an apocalyptic number.

It is an amenable number.

404224444221 is a deficient number, since it is larger than the sum of its proper divisors (178088220867).

404224444221 is a wasteful number, since it uses less digits than its factorization.

404224444221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11401.

The product of its (nonzero) digits is 65536, while the sum is 33.

Adding to 404224444221 its reverse (122444422404), we get a palindrome (526668866625).

The spelling of 404224444221 in words is "four hundred four billion, two hundred twenty-four million, four hundred forty-four thousand, two hundred twenty-one".