204023321113221 has 12 divisors (see below), whose sum is σ = 294930049035648. Its totient is φ = 135909533724264.

The previous prime is 204023321113207. The next prime is 204023321113243. The reversal of 204023321113221 is 122311123320402.

204023321113221 is a `hidden beast` number, since 2 + 0 + 4 + 0 + 2 + 3 + 321 + 11 + 322 + 1 = 666.

It is not a de Polignac number, because 204023321113221 - 2⁷ = 204023321113093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204023321113321) 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 11 ways as a sum of consecutive naturals, for example, 8834461525 + ... + 8834484618.

It is an arithmetic number, because the mean of its divisors is an integer number (24577504086304).

Almost surely, 2^{204023321113221} is an apocalyptic number.

It is an amenable number.

204023321113221 is a deficient number, since it is larger than the sum of its proper divisors (90906727922427).

204023321113221 is a wasteful number, since it uses less digits than its factorization.

204023321113221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17668947432 (or 17668947429 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 204023321113221 its reverse (122311123320402), we get a palindrome (326334444433623).

The spelling of 204023321113221 in words is "two hundred four trillion, twenty-three billion, three hundred twenty-one million, one hundred thirteen thousand, two hundred twenty-one".