21120030233 has 8 divisors (see below), whose sum is σ = 21193143552. Its totient is φ = 21047044176.

The previous prime is 21120030221. The next prime is 21120030271. The reversal of 21120030233 is 33203002112.

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 21120030233 - 2¹⁰ = 21120029209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21120030433) 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, 306866 + ... + 369332.

It is an arithmetic number, because the mean of its divisors is an integer number (2649142944).

Almost surely, 2^21120030233 is an apocalyptic number.

It is an amenable number.

21120030233 is a deficient number, since it is larger than the sum of its proper divisors (73113319).

21120030233 is an equidigital number, since it uses as much as digits as its factorization.

21120030233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63631.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21120030233 its reverse (33203002112), we get a palindrome (54323032345).

The spelling of 21120030233 in words is "twenty-one billion, one hundred twenty million, thirty thousand, two hundred thirty-three".