21004104233 has 8 divisors (see below), whose sum is σ = 24005664768. Its totient is φ = 18002787264.

The previous prime is 21004104221. The next prime is 21004104259. The reversal of 21004104233 is 33240140012.

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

It is not a de Polignac number, because 21004104233 - 2⁴ = 21004104217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21004104203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196385 + ... + 283857.

It is an arithmetic number, because the mean of its divisors is an integer number (3000708096).

Almost surely, 2^21004104233 is an apocalyptic number.

It is an amenable number.

21004104233 is a deficient number, since it is larger than the sum of its proper divisors (3001560535).

21004104233 is an equidigital number, since it uses as much as digits as its factorization.

21004104233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121783.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21004104233 its reverse (33240140012), we get a palindrome (54244244245).

The spelling of 21004104233 in words is "twenty-one billion, four million, one hundred four thousand, two hundred thirty-three".