21223100222 has 8 divisors (see below), whose sum is σ = 31865833272. Its totient is φ = 10601155800.

The previous prime is 21223100183. The next prime is 21223100243. The reversal of 21223100222 is 22200132212.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21223100222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5194604 + ... + 5198687.

It is an arithmetic number, because the mean of its divisors is an integer number (3983229159).

Almost surely, 2^21223100222 is an apocalyptic number.

21223100222 is a deficient number, since it is larger than the sum of its proper divisors (10642733050).

21223100222 is a wasteful number, since it uses less digits than its factorization.

21223100222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10394314.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 21223100222 its reverse (22200132212), we get a palindrome (43423232434).

The spelling of 21223100222 in words is "twenty-one billion, two hundred twenty-three million, one hundred thousand, two hundred twenty-two".