204212133 has 24 divisors (see below), whose sum is σ = 317116800. Its totient is φ = 126226944.

The previous prime is 204212123. The next prime is 204212179. The reversal of 204212133 is 331212402.

It is not a de Polignac number, because 204212133 - 2¹³ = 204203941 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204212123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4668 + ... + 20741.

It is an arithmetic number, because the mean of its divisors is an integer number (13213200).

Almost surely, 2^204212133 is an apocalyptic number.

It is an amenable number.

204212133 is a deficient number, since it is larger than the sum of its proper divisors (112904667).

204212133 is a wasteful number, since it uses less digits than its factorization.

204212133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25481 (or 25478 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 204212133 is about 14290.2810679147. The cubic root of 204212133 is about 588.8805095613.

Adding to 204212133 its reverse (331212402), we get a palindrome (535424535).

The spelling of 204212133 in words is "two hundred four million, two hundred twelve thousand, one hundred thirty-three".