21303330233 has 8 divisors (see below), whose sum is σ = 22446715200. Its totient is φ = 20162161008.

The previous prime is 21303330221. The next prime is 21303330253. The reversal of 21303330233 is 33203330312.

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 21303330233 - 2¹⁰ = 21303329209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21303330199 and 21303330208.

It is not an unprimeable number, because it can be changed into a prime (21303330253) 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, 534173 + ... + 572666.

It is an arithmetic number, because the mean of its divisors is an integer number (2805839400).

Almost surely, 2^21303330233 is an apocalyptic number.

It is an amenable number.

21303330233 is a deficient number, since it is larger than the sum of its proper divisors (1143384967).

21303330233 is a wasteful number, since it uses less digits than its factorization.

21303330233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107871.

The product of its (nonzero) digits is 2916, while the sum is 23.

Adding to 21303330233 its reverse (33203330312), we get a palindrome (54506660545).

The spelling of 21303330233 in words is "twenty-one billion, three hundred three million, three hundred thirty thousand, two hundred thirty-three".