21303333033 has 8 divisors (see below), whose sum is σ = 29639419968. Its totient is φ = 13584734064.

The previous prime is 21303333031. The next prime is 21303333041. The reversal of 21303333033 is 33033330312.

It is a happy number.

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

It is not a de Polignac number, because 21303333033 - 2¹ = 21303333031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21303332994 and 21303333012.

It is not an unprimeable number, because it can be changed into a prime (21303333031) 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, 154371910 + ... + 154372047.

It is an arithmetic number, because the mean of its divisors is an integer number (3704927496).

Almost surely, 2^21303333033 is an apocalyptic number.

21303333033 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21303333033 is a deficient number, since it is larger than the sum of its proper divisors (8336086935).

21303333033 is a wasteful number, since it uses less digits than its factorization.

21303333033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308743983.

The product of its (nonzero) digits is 4374, while the sum is 24.

Adding to 21303333033 its reverse (33033330312), we get a palindrome (54336663345).

The spelling of 21303333033 in words is "twenty-one billion, three hundred three million, three hundred thirty-three thousand, thirty-three".