204424134221 has 8 divisors (see below), whose sum is σ = 215187466080. Its totient is φ = 193661219088.

The previous prime is 204424134209. The next prime is 204424134307. The reversal of 204424134221 is 122431424402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204424134221 - 2¹⁴ = 204424117837 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 (204424134121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1739495 + ... + 1853291.

It is an arithmetic number, because the mean of its divisors is an integer number (26898433260).

Almost surely, 2^204424134221 is an apocalyptic number.

It is an amenable number.

204424134221 is a deficient number, since it is larger than the sum of its proper divisors (10763331859).

204424134221 is a wasteful number, since it uses less digits than its factorization.

204424134221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208363.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 204424134221 its reverse (122431424402), we get a palindrome (326855558623).

The spelling of 204424134221 in words is "two hundred four billion, four hundred twenty-four million, one hundred thirty-four thousand, two hundred twenty-one".