204311302424221 has 16 divisors (see below), whose sum is σ = 207824995883520. Its totient is φ = 200799308772400.

The previous prime is 204311302424213. The next prime is 204311302424231. The reversal of 204311302424221 is 122424203113402.

It is a cyclic number.

It is not a de Polignac number, because 204311302424221 - 2³ = 204311302424213 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 (204311302424231) 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, 5179893126 + ... + 5179932568.

It is an arithmetic number, because the mean of its divisors is an integer number (12989062242720).

Almost surely, 2^{204311302424221} is an apocalyptic number.

It is an amenable number.

204311302424221 is a deficient number, since it is larger than the sum of its proper divisors (3513693459299).

204311302424221 is a wasteful number, since it uses less digits than its factorization.

204311302424221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58736.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 204311302424221 its reverse (122424203113402), we get a palindrome (326735505537623).

The spelling of 204311302424221 in words is "two hundred four trillion, three hundred eleven billion, three hundred two million, four hundred twenty-four thousand, two hundred twenty-one".