21230233033 has 8 divisors (see below), whose sum is σ = 21501676800. Its totient is φ = 20958857088.

The previous prime is 21230232967. The next prime is 21230233061. The reversal of 21230233033 is 33033203212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21230233033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21230232995 and 21230233013.

It is not an unprimeable number, because it can be changed into a prime (21230233333) 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, 996153 + ... + 1017241.

It is an arithmetic number, because the mean of its divisors is an integer number (2687709600).

Almost surely, 2^21230233033 is an apocalyptic number.

It is an amenable number.

21230233033 is a deficient number, since it is larger than the sum of its proper divisors (271443767).

21230233033 is a wasteful number, since it uses less digits than its factorization.

21230233033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33911.

The product of its (nonzero) digits is 1944, while the sum is 22.

Adding to 21230233033 its reverse (33033203212), we get a palindrome (54263436245).

The spelling of 21230233033 in words is "twenty-one billion, two hundred thirty million, two hundred thirty-three thousand, thirty-three".