404341312221 has 96 divisors (see below), whose sum is σ = 746757513216. Its totient is φ = 204721344000.

The previous prime is 404341312183. The next prime is 404341312237. The reversal of 404341312221 is 122213143404.

404341312221 is a `hidden beast` number, since 4 + 0 + 4 + 341 + 312 + 2 + 2 + 1 = 666.

It is not a de Polignac number, because 404341312221 - 2⁶ = 404341312157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404341312721) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7823856 + ... + 7875366.

It is an arithmetic number, because the mean of its divisors is an integer number (7778724096).

Almost surely, 2^404341312221 is an apocalyptic number.

It is an amenable number.

404341312221 is a deficient number, since it is larger than the sum of its proper divisors (342416200995).

404341312221 is a wasteful number, since it uses less digits than its factorization.

404341312221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51823 (or 51820 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 404341312221 its reverse (122213143404), we get a palindrome (526554455625).

The spelling of 404341312221 in words is "four hundred four billion, three hundred forty-one million, three hundred twelve thousand, two hundred twenty-one".