21230073033 has 8 divisors (see below), whose sum is σ = 30484207488. Its totient is φ = 13064660304.

The previous prime is 21230073031. The next prime is 21230073037. The reversal of 21230073033 is 33037003212.

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 21230073033 - 2¹ = 21230073031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21230072994 and 21230073012.

It is not an unprimeable number, because it can be changed into a prime (21230073031) 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, 272180385 + ... + 272180462.

It is an arithmetic number, because the mean of its divisors is an integer number (3810525936).

Almost surely, 2^21230073033 is an apocalyptic number.

It is an amenable number.

21230073033 is a deficient number, since it is larger than the sum of its proper divisors (9254134455).

21230073033 is a wasteful number, since it uses less digits than its factorization.

21230073033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544360863.

The product of its (nonzero) digits is 2268, while the sum is 24.

Adding to 21230073033 its reverse (33037003212), we get a palindrome (54267076245).

The spelling of 21230073033 in words is "twenty-one billion, two hundred thirty million, seventy-three thousand, thirty-three".