21233003223 has 16 divisors (see below), whose sum is σ = 28416040416. Its totient is φ = 14102699520.

The previous prime is 21233003189. The next prime is 21233003251. The reversal of 21233003223 is 32230033212.

It is not a de Polignac number, because 21233003223 - 2²² = 21228808919 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21233003223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233003023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2231011 + ... + 2240507.

It is an arithmetic number, because the mean of its divisors is an integer number (1776002526).

Almost surely, 2^21233003223 is an apocalyptic number.

21233003223 is a deficient number, since it is larger than the sum of its proper divisors (7183037193).

21233003223 is a wasteful number, since it uses less digits than its factorization.

21233003223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12194.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 21233003223 its reverse (32230033212), we get a palindrome (53463036435).

The spelling of 21233003223 in words is "twenty-one billion, two hundred thirty-three million, three thousand, two hundred twenty-three".