404221031121 has 48 divisors (see below), whose sum is σ = 591904841600. Its totient is φ = 245136844800.

The previous prime is 404221031119. The next prime is 404221031161. The reversal of 404221031121 is 121130122404.

It is not a de Polignac number, because 404221031121 - 2¹ = 404221031119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404221031161) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4802205 + ... + 4885653.

Almost surely, 2^404221031121 is an apocalyptic number.

It is an amenable number.

404221031121 is a deficient number, since it is larger than the sum of its proper divisors (187683810479).

404221031121 is a wasteful number, since it uses less digits than its factorization.

404221031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83674 (or 83657 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 404221031121 its reverse (121130122404), we get a palindrome (525351153525).

The spelling of 404221031121 in words is "four hundred four billion, two hundred twenty-one million, thirty-one thousand, one hundred twenty-one".