404113113121 has 4 divisors (see below), whose sum is σ = 412711264512. Its totient is φ = 395514961732.

The previous prime is 404113113109. The next prime is 404113113127. The reversal of 404113113121 is 121311311404.

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 404113113121 - 2⁷ = 404113112993 is a prime.

It is a super-2 number, since 2×404113113121² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404113113092 and 404113113101.

It is not an unprimeable number, because it can be changed into a prime (404113113127) 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, 4299075625 + ... + 4299075718.

It is an arithmetic number, because the mean of its divisors is an integer number (103177816128).

Almost surely, 2^404113113121 is an apocalyptic number.

It is an amenable number.

404113113121 is a deficient number, since it is larger than the sum of its proper divisors (8598151391).

404113113121 is an equidigital number, since it uses as much as digits as its factorization.

404113113121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8598151390.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 404113113121 its reverse (121311311404), we get a palindrome (525424424525).

The spelling of 404113113121 in words is "four hundred four billion, one hundred thirteen million, one hundred thirteen thousand, one hundred twenty-one".