21334333223 has 4 divisors (see below), whose sum is σ = 24382095120. Its totient is φ = 18286571328.

The previous prime is 21334333213. The next prime is 21334333253. The reversal of 21334333223 is 32233343312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21334333223 - 2⁸ = 21334332967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21334333213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1523880938 + ... + 1523880951.

It is an arithmetic number, because the mean of its divisors is an integer number (6095523780).

Almost surely, 2^21334333223 is an apocalyptic number.

21334333223 is a deficient number, since it is larger than the sum of its proper divisors (3047761897).

21334333223 is an equidigital number, since it uses as much as digits as its factorization.

21334333223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3047761896.

The product of its digits is 23328, while the sum is 29.

Adding to 21334333223 its reverse (32233343312), we get a palindrome (53567676535).

The spelling of 21334333223 in words is "twenty-one billion, three hundred thirty-four million, three hundred thirty-three thousand, two hundred twenty-three".