404001101121 has 4 divisors (see below), whose sum is σ = 538668134832. Its totient is φ = 269334067412.

The previous prime is 404001101111. The next prime is 404001101129. The reversal of 404001101121 is 121101100404.

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 404001101121 - 2⁶ = 404001101057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 404001101121.

It is not an unprimeable number, because it can be changed into a prime (404001101129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67333516851 + ... + 67333516856.

It is an arithmetic number, because the mean of its divisors is an integer number (134667033708).

Almost surely, 2^404001101121 is an apocalyptic number.

It is an amenable number.

404001101121 is a deficient number, since it is larger than the sum of its proper divisors (134667033711).

404001101121 is a wasteful number, since it uses less digits than its factorization.

404001101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134667033710.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 404001101121 its reverse (121101100404), we get a palindrome (525102201525).

The spelling of 404001101121 in words is "four hundred four billion, one million, one hundred one thousand, one hundred twenty-one".