404220301135221 has 4 divisors (see below), whose sum is σ = 538960401513632. Its totient is φ = 269480200756812.

The previous prime is 404220301135201. The next prime is 404220301135253. The reversal of 404220301135221 is 122531103022404.

It is a happy number.

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 not a de Polignac number, because 404220301135221 - 2⁹ = 404220301134709 is a prime.

It is a super-2 number, since 2×404220301135221² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404220301135201) 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, 67370050189201 + ... + 67370050189206.

It is an arithmetic number, because the mean of its divisors is an integer number (134740100378408).

Almost surely, 2^{404220301135221} is an apocalyptic number.

It is an amenable number.

404220301135221 is a deficient number, since it is larger than the sum of its proper divisors (134740100378411).

404220301135221 is a wasteful number, since it uses less digits than its factorization.

404220301135221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134740100378410.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 404220301135221 its reverse (122531103022404), we get a palindrome (526751404157625).

The spelling of 404220301135221 in words is "four hundred four trillion, two hundred twenty billion, three hundred one million, one hundred thirty-five thousand, two hundred twenty-one".