21333222223 has 4 divisors (see below), whose sum is σ = 22260753648. Its totient is φ = 20405690800.

The previous prime is 21333222217. The next prime is 21333222299. The reversal of 21333222223 is 32222233312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21333222223 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 (21333226223) 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, 463765678 + ... + 463765723.

It is an arithmetic number, because the mean of its divisors is an integer number (5565188412).

Almost surely, 2^21333222223 is an apocalyptic number.

21333222223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21333222223 is a deficient number, since it is larger than the sum of its proper divisors (927531425).

21333222223 is an equidigital number, since it uses as much as digits as its factorization.

21333222223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927531424.

The product of its digits is 5184, while the sum is 25.

Adding to 21333222223 its reverse (32222233312), we get a palindrome (53555455535).

The spelling of 21333222223 in words is "twenty-one billion, three hundred thirty-three million, two hundred twenty-two thousand, two hundred twenty-three".