21210010112222 has 16 divisors (see below), whose sum is σ = 32126410723680. Its totient is φ = 10501222639872.

The previous prime is 21210010112201. The next prime is 21210010112231. The reversal of 21210010112222 is 22221101001212.

It is a self number, because there is not a number n which added to its sum of digits gives 21210010112222.

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 7 ways as a sum of consecutive naturals, for example, 1380443 + ... + 6657750.

It is an arithmetic number, because the mean of its divisors is an integer number (2007900670230).

Almost surely, 2^{21210010112222} is an apocalyptic number.

21210010112222 is a deficient number, since it is larger than the sum of its proper divisors (10916400611458).

21210010112222 is a wasteful number, since it uses less digits than its factorization.

21210010112222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8051107.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21210010112222 its reverse (22221101001212), we get a palindrome (43431111113434).

The spelling of 21210010112222 in words is "twenty-one trillion, two hundred ten billion, ten million, one hundred twelve thousand, two hundred twenty-two".