21124303433 has 8 divisors (see below), whose sum is σ = 22337581056. Its totient is φ = 19944266400.

The previous prime is 21124303393. The next prime is 21124303469. The reversal of 21124303433 is 33430342112.

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 21124303433 - 2²⁰ = 21123254857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21124303933) 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, 8308841 + ... + 8311382.

It is an arithmetic number, because the mean of its divisors is an integer number (2792197632).

Almost surely, 2^21124303433 is an apocalyptic number.

It is an amenable number.

21124303433 is a deficient number, since it is larger than the sum of its proper divisors (1213277623).

21124303433 is a wasteful number, since it uses less digits than its factorization.

21124303433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16620295.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 21124303433 its reverse (33430342112), we get a palindrome (54554645545).

The spelling of 21124303433 in words is "twenty-one billion, one hundred twenty-four million, three hundred three thousand, four hundred thirty-three".