204041221402321 has 4 divisors (see below), whose sum is σ = 206915041422144. Its totient is φ = 201167401382500.

The previous prime is 204041221402241. The next prime is 204041221402373. The reversal of 204041221402321 is 123204122140402.

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 204041221402321 - 2¹⁷ = 204041221271249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204041221402321.

It is not an unprimeable number, because it can be changed into a prime (204041221402391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1436910009805 + ... + 1436910009946.

It is an arithmetic number, because the mean of its divisors is an integer number (51728760355536).

Almost surely, 2^{204041221402321} is an apocalyptic number.

It is an amenable number.

204041221402321 is a deficient number, since it is larger than the sum of its proper divisors (2873820019823).

204041221402321 is an equidigital number, since it uses as much as digits as its factorization.

204041221402321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2873820019822.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 204041221402321 its reverse (123204122140402), we get a palindrome (327245343542723).

The spelling of 204041221402321 in words is "two hundred four trillion, forty-one billion, two hundred twenty-one million, four hundred two thousand, three hundred twenty-one".