21332021223 has 8 divisors (see below), whose sum is σ = 28471399936. Its totient is φ = 14206995000.

The previous prime is 21332021201. The next prime is 21332021233. The reversal of 21332021223 is 32212023312.

It is a happy number.

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

It is not a de Polignac number, because 21332021223 - 2¹² = 21332017127 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21332021223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332021233) 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, 3584653 + ... + 3590598.

It is an arithmetic number, because the mean of its divisors is an integer number (3558924992).

Almost surely, 2^21332021223 is an apocalyptic number.

21332021223 is a deficient number, since it is larger than the sum of its proper divisors (7139378713).

21332021223 is an equidigital number, since it uses as much as digits as its factorization.

21332021223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7176245.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21332021223 its reverse (32212023312), we get a palindrome (53544044535).

The spelling of 21332021223 in words is "twenty-one billion, three hundred thirty-two million, twenty-one thousand, two hundred twenty-three".