204103314421 has 4 divisors (see below), whose sum is σ = 204994595500. Its totient is φ = 203212033344.

The previous prime is 204103314419. The next prime is 204103314439. The reversal of 204103314421 is 124413301402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 124548291396 + 79555023025 = 352914^2 + 282055^2 .

It is a cyclic number.

It is not a de Polignac number, because 204103314421 - 2¹ = 204103314419 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 (204103314451) 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, 445640196 + ... + 445640653.

It is an arithmetic number, because the mean of its divisors is an integer number (51248648875).

Almost surely, 2^204103314421 is an apocalyptic number.

It is an amenable number.

204103314421 is a deficient number, since it is larger than the sum of its proper divisors (891281079).

204103314421 is an equidigital number, since it uses as much as digits as its factorization.

204103314421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891281078.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 204103314421 its reverse (124413301402), we get a palindrome (328516615823).

The spelling of 204103314421 in words is "two hundred four billion, one hundred three million, three hundred fourteen thousand, four hundred twenty-one".