204421203424441 has 16 divisors (see below), whose sum is σ = 217656394838784. Its totient is φ = 191731832457984.

The previous prime is 204421203424429. The next prime is 204421203424463. The reversal of 204421203424441 is 144424302124402.

It is a cyclic number.

It is not a de Polignac number, because 204421203424441 - 2³⁷ = 204283764470969 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 204421203424441.

It is not an unprimeable number, because it can be changed into a prime (204421203421441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 954124416 + ... + 954338641.

It is an arithmetic number, because the mean of its divisors is an integer number (13603524677424).

Almost surely, 2^{204421203424441} is an apocalyptic number.

It is an amenable number.

204421203424441 is a deficient number, since it is larger than the sum of its proper divisors (13235191414343).

204421203424441 is a wasteful number, since it uses less digits than its factorization.

204421203424441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1908463200.

The product of its (nonzero) digits is 196608, while the sum is 37.

Adding to 204421203424441 its reverse (144424302124402), we get a palindrome (348845505548843).

The spelling of 204421203424441 in words is "two hundred four trillion, four hundred twenty-one billion, two hundred three million, four hundred twenty-four thousand, four hundred forty-one".