404000200221 has 4 divisors (see below), whose sum is σ = 538666933632. Its totient is φ = 269333466812.

The previous prime is 404000200207. The next prime is 404000200259. The reversal of 404000200221 is 122002000404.

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 404000200221 - 2⁶ = 404000200157 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 404000200221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404000200291) 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, 67333366701 + ... + 67333366706.

It is an arithmetic number, because the mean of its divisors is an integer number (134666733408).

Almost surely, 2^404000200221 is an apocalyptic number.

It is an amenable number.

404000200221 is a deficient number, since it is larger than the sum of its proper divisors (134666733411).

404000200221 is a wasteful number, since it uses less digits than its factorization.

404000200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134666733410.

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 404000200221 its reverse (122002000404), we get a palindrome (526002200625).

The spelling of 404000200221 in words is "four hundred four billion, two hundred thousand, two hundred twenty-one".