404021414021 has 4 divisors (see below), whose sum is σ = 409711856544. Its totient is φ = 398330971500.

The previous prime is 404021413997. The next prime is 404021414047. The reversal of 404021414021 is 120414120404.

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 404021414021 - 2¹⁰ = 404021412997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404023414021) 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, 2845221155 + ... + 2845221296.

It is an arithmetic number, because the mean of its divisors is an integer number (102427964136).

Almost surely, 2^404021414021 is an apocalyptic number.

It is an amenable number.

404021414021 is a deficient number, since it is larger than the sum of its proper divisors (5690442523).

404021414021 is an equidigital number, since it uses as much as digits as its factorization.

404021414021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5690442522.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 404021414021 its reverse (120414120404), we get a palindrome (524435534425).

The spelling of 404021414021 in words is "four hundred four billion, twenty-one million, four hundred fourteen thousand, twenty-one".