404021410221 has 32 divisors (see below), whose sum is σ = 632952552960. Its totient is φ = 225997444800.

The previous prime is 404021410211. The next prime is 404021410271. The reversal of 404021410221 is 122014120404.

It is not a de Polignac number, because 404021410221 - 2⁶ = 404021410157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404021410211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3608086 + ... + 3718376.

It is an arithmetic number, because the mean of its divisors is an integer number (19779767280).

Almost surely, 2^404021410221 is an apocalyptic number.

It is an amenable number.

404021410221 is a deficient number, since it is larger than the sum of its proper divisors (228931142739).

404021410221 is a wasteful number, since it uses less digits than its factorization.

404021410221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118857.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 404021410221 its reverse (122014120404), we get a palindrome (526035530625).

The spelling of 404021410221 in words is "four hundred four billion, twenty-one million, four hundred ten thousand, two hundred twenty-one".