204433312021 has 8 divisors (see below), whose sum is σ = 207492077984. Its totient is φ = 201374767440.

The previous prime is 204433312009. The next prime is 204433312043. The reversal of 204433312021 is 120213334402.

204433312021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204433312021 - 2³¹ = 202285828373 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 (204433312001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3485266 + ... + 3543436.

It is an arithmetic number, because the mean of its divisors is an integer number (25936509748).

Almost surely, 2^204433312021 is an apocalyptic number.

It is an amenable number.

204433312021 is a deficient number, since it is larger than the sum of its proper divisors (3058765963).

204433312021 is an equidigital number, since it uses as much as digits as its factorization.

204433312021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110691.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 204433312021 its reverse (120213334402), we get a palindrome (324646646423).

The spelling of 204433312021 in words is "two hundred four billion, four hundred thirty-three million, three hundred twelve thousand, twenty-one".