404401421211 has 8 divisors (see below), whose sum is σ = 540958254144. Its totient is φ = 268722767880.

The previous prime is 404401421189. The next prime is 404401421231. The reversal of 404401421211 is 112124104404.

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

It is not a de Polignac number, because 404401421211 - 2¹⁸ = 404401159067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (404401421231) 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 7 ways as a sum of consecutive naturals, for example, 219543825 + ... + 219545666.

It is an arithmetic number, because the mean of its divisors is an integer number (67619781768).

Almost surely, 2^404401421211 is an apocalyptic number.

404401421211 is a deficient number, since it is larger than the sum of its proper divisors (136556832933).

404401421211 is a wasteful number, since it uses less digits than its factorization.

404401421211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439089801.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 404401421211 its reverse (112124104404), we get a palindrome (516525525615).

The spelling of 404401421211 in words is "four hundred four billion, four hundred one million, four hundred twenty-one thousand, two hundred eleven".