404334310221 has 8 divisors (see below), whose sum is σ = 599013792960. Its totient is φ = 269556206796.

The previous prime is 404334310189. The next prime is 404334310223. The reversal of 404334310221 is 122013433404.

404334310221 is a `hidden beast` number, since 4 + 0 + 4 + 3 + 3 + 431 + 0 + 221 = 666.

It is not a de Polignac number, because 404334310221 - 2⁵ = 404334310189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 14975344823 = 404334310221 / (4 + 0 + 4 + 3 + 3 + 4 + 3 + 1 + 0 + 2 + 2 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404334310223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7487672385 + ... + 7487672438.

It is an arithmetic number, because the mean of its divisors is an integer number (74876724120).

Almost surely, 2^404334310221 is an apocalyptic number.

It is an amenable number.

404334310221 is a deficient number, since it is larger than the sum of its proper divisors (194679482739).

404334310221 is a wasteful number, since it uses less digits than its factorization.

404334310221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14975344832 (or 14975344826 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 404334310221 its reverse (122013433404), we get a palindrome (526347743625).

The spelling of 404334310221 in words is "four hundred four billion, three hundred thirty-four million, three hundred ten thousand, two hundred twenty-one".