204243033112321 has 4 divisors (see below), whose sum is σ = 233420609271232. Its totient is φ = 175065456953412.

The previous prime is 204243033112297. The next prime is 204243033112331. The reversal of 204243033112321 is 123211330342402.

204243033112321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 204243033112321 - 2²¹ = 204243031015169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204243033112331) 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, 14588788079445 + ... + 14588788079458.

It is an arithmetic number, because the mean of its divisors is an integer number (58355152317808).

Almost surely, 2^{204243033112321} is an apocalyptic number.

It is an amenable number.

204243033112321 is a deficient number, since it is larger than the sum of its proper divisors (29177576158911).

204243033112321 is an equidigital number, since it uses as much as digits as its factorization.

204243033112321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29177576158910.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 204243033112321 its reverse (123211330342402), we get a palindrome (327454363454723).

The spelling of 204243033112321 in words is "two hundred four trillion, two hundred forty-three billion, thirty-three million, one hundred twelve thousand, three hundred twenty-one".