404010012021 has 32 divisors (see below), whose sum is σ = 671742790656. Its totient is φ = 209831040000.

The previous prime is 404010012013. The next prime is 404010012061. The reversal of 404010012021 is 120210010404.

It is not a de Polignac number, because 404010012021 - 2³ = 404010012013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404010012061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 926886 + ... + 1291176.

It is an arithmetic number, because the mean of its divisors is an integer number (20991962208).

Almost surely, 2^404010012021 is an apocalyptic number.

It is an amenable number.

404010012021 is a deficient number, since it is larger than the sum of its proper divisors (267732778635).

404010012021 is a wasteful number, since it uses less digits than its factorization.

404010012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369113.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 404010012021 its reverse (120210010404), we get a palindrome (524220022425).

The spelling of 404010012021 in words is "four hundred four billion, ten million, twelve thousand, twenty-one".