21532233223 has 8 divisors (see below), whose sum is σ = 21693428000. Its totient is φ = 21371568768.

The previous prime is 21532233209. The next prime is 21532233241. The reversal of 21532233223 is 32233223512.

It is a happy number.

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-21532233223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21532233191 and 21532233200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21532233323) 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, 50886 + ... + 213667.

It is an arithmetic number, because the mean of its divisors is an integer number (2711678500).

Almost surely, 2^21532233223 is an apocalyptic number.

21532233223 is a deficient number, since it is larger than the sum of its proper divisors (161194777).

21532233223 is a wasteful number, since it uses less digits than its factorization.

21532233223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265161.

The product of its digits is 12960, while the sum is 28.

Adding to 21532233223 its reverse (32233223512), we get a palindrome (53765456735).

The spelling of 21532233223 in words is "twenty-one billion, five hundred thirty-two million, two hundred thirty-three thousand, two hundred twenty-three".