21133023233 has 8 divisors (see below), whose sum is σ = 24153958080. Its totient is φ = 18112571280.

The previous prime is 21133023227. The next prime is 21133023253. The reversal of 21133023233 is 33232033112.

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 21133023233 - 2⁶ = 21133023169 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21133023199 and 21133023208.

It is not an unprimeable number, because it can be changed into a prime (21133023253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21503 + ... + 206708.

It is an arithmetic number, because the mean of its divisors is an integer number (3019244760).

Almost surely, 2^21133023233 is an apocalyptic number.

It is an amenable number.

21133023233 is a deficient number, since it is larger than the sum of its proper divisors (3020934847).

21133023233 is a wasteful number, since it uses less digits than its factorization.

21133023233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241447.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21133023233 its reverse (33232033112), we get a palindrome (54365056345).

The spelling of 21133023233 in words is "twenty-one billion, one hundred thirty-three million, twenty-three thousand, two hundred thirty-three".