21232304033 has 8 divisors (see below), whose sum is σ = 21408877152. Its totient is φ = 21056459776.

The previous prime is 21232304029. The next prime is 21232304057. The reversal of 21232304033 is 33040323212.

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 21232304033 - 2² = 21232304029 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21232301033) 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, 123635 + ... + 240312.

It is an arithmetic number, because the mean of its divisors is an integer number (2676109644).

Almost surely, 2^21232304033 is an apocalyptic number.

It is an amenable number.

21232304033 is a deficient number, since it is larger than the sum of its proper divisors (176573119).

21232304033 is a wasteful number, since it uses less digits than its factorization.

21232304033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364431.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 21232304033 its reverse (33040323212), we get a palindrome (54272627245).

The spelling of 21232304033 in words is "twenty-one billion, two hundred thirty-two million, three hundred four thousand, thirty-three".