21333113223 has 8 divisors (see below), whose sum is σ = 28450422000. Its totient is φ = 14218939968.

The previous prime is 21333113213. The next prime is 21333113267. The reversal of 21333113223 is 32231133312.

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

It is not a de Polignac number, because 21333113223 - 2²⁰ = 21332064647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21333113193 and 21333113202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21333113213) 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, 767958 + ... + 795251.

It is an arithmetic number, because the mean of its divisors is an integer number (3556302750).

Almost surely, 2^21333113223 is an apocalyptic number.

21333113223 is a deficient number, since it is larger than the sum of its proper divisors (7117308777).

21333113223 is a wasteful number, since it uses less digits than its factorization.

21333113223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1567761.

The product of its digits is 1944, while the sum is 24.

Adding to 21333113223 its reverse (32231133312), we get a palindrome (53564246535).

The spelling of 21333113223 in words is "twenty-one billion, three hundred thirty-three million, one hundred thirteen thousand, two hundred twenty-three".