404013331121 has 4 divisors (see below), whose sum is σ = 409127424000. Its totient is φ = 398899238244.

The previous prime is 404013331081. The next prime is 404013331151. The reversal of 404013331121 is 121133310404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 404013331121 - 2²⁶ = 403946222257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404013331151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2557046321 + ... + 2557046478.

It is an arithmetic number, because the mean of its divisors is an integer number (102281856000).

Almost surely, 2^404013331121 is an apocalyptic number.

It is an amenable number.

404013331121 is a deficient number, since it is larger than the sum of its proper divisors (5114092879).

404013331121 is an equidigital number, since it uses as much as digits as its factorization.

404013331121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5114092878.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 404013331121 its reverse (121133310404), we get a palindrome (525146641525).

The spelling of 404013331121 in words is "four hundred four billion, thirteen million, three hundred thirty-one thousand, one hundred twenty-one".