204240021332 has 12 divisors (see below), whose sum is σ = 358269018996. Its totient is φ = 101877444480.

The previous prime is 204240021319. The next prime is 204240021481. The reversal of 204240021332 is 233120042402.

It can be written as a sum of positive squares in 2 ways, for example, as 10397065156 + 193842956176 = 101966^2 + 440276^2 .

It is a junction number, because it is equal to n+sod(n) for n = 204240021298 and 204240021307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60639653 + ... + 60643020.

It is an arithmetic number, because the mean of its divisors is an integer number (29855751583).

Almost surely, 2^204240021332 is an apocalyptic number.

It is an amenable number.

204240021332 is a deficient number, since it is larger than the sum of its proper divisors (154028997664).

204240021332 is a wasteful number, since it uses less digits than its factorization.

204240021332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121283098 (or 121283096 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 204240021332 its reverse (233120042402), we get a palindrome (437360063734).

The spelling of 204240021332 in words is "two hundred four billion, two hundred forty million, twenty-one thousand, three hundred thirty-two".