21323000222 has 16 divisors (see below), whose sum is σ = 32204144544. Its totient is φ = 10588320000.

The previous prime is 21323000213. The next prime is 21323000233. The reversal of 21323000222 is 22200032312.

It is a self number, because there is not a number n which added to its sum of digits gives 21323000222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2060822 + ... + 2071142.

It is an arithmetic number, because the mean of its divisors is an integer number (2012759034).

Almost surely, 2^21323000222 is an apocalyptic number.

21323000222 is a deficient number, since it is larger than the sum of its proper divisors (10881144322).

21323000222 is a wasteful number, since it uses less digits than its factorization.

21323000222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17315.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 21323000222 its reverse (22200032312), we get a palindrome (43523032534).

The spelling of 21323000222 in words is "twenty-one billion, three hundred twenty-three million, two hundred twenty-two", and thus it is an aban number.