204003111321 has 12 divisors (see below), whose sum is σ = 310180169520. Its totient is φ = 128844070200.

The previous prime is 204003111307. The next prime is 204003111373. The reversal of 204003111321 is 123111300402.

It is not a de Polignac number, because 204003111321 - 2¹⁵ = 204003078553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204003111294 and 204003111303.

It is not an unprimeable number, because it can be changed into a prime (204003111821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 596500155 + ... + 596500496.

It is an arithmetic number, because the mean of its divisors is an integer number (25848347460).

Almost surely, 2^204003111321 is an apocalyptic number.

It is an amenable number.

204003111321 is a deficient number, since it is larger than the sum of its proper divisors (106177058199).

204003111321 is a wasteful number, since it uses less digits than its factorization.

204003111321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193000676 (or 1193000673 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 204003111321 its reverse (123111300402), we get a palindrome (327114411723).

The spelling of 204003111321 in words is "two hundred four billion, three million, one hundred eleven thousand, three hundred twenty-one".