21332323223 has 8 divisors (see below), whose sum is σ = 21507440640. Its totient is φ = 21157317720.

The previous prime is 21332323219. The next prime is 21332323277. The reversal of 21332323223 is 32232323312.

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 21332323223 - 2² = 21332323219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21332323192 and 21332323201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332323213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378938 + ... + 431576.

It is an arithmetic number, because the mean of its divisors is an integer number (2688430080).

Almost surely, 2^21332323223 is an apocalyptic number.

21332323223 is a deficient number, since it is larger than the sum of its proper divisors (175117417).

21332323223 is a wasteful number, since it uses less digits than its factorization.

21332323223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55957.

The product of its digits is 7776, while the sum is 26.

Adding to 21332323223 its reverse (32232323312), we get a palindrome (53564646535).

The spelling of 21332323223 in words is "twenty-one billion, three hundred thirty-two million, three hundred twenty-three thousand, two hundred twenty-three".