21102222110203 has 12 divisors (see below), whose sum is σ = 22928322730320. Its totient is φ = 19412493069216.

The previous prime is 21102222110161. The next prime is 21102222110209. The reversal of 21102222110203 is 30201122220112.

It is a de Polignac number, because none of the positive numbers 2^k-21102222110203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21102222110209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 213031063 + ... + 213130096.

It is an arithmetic number, because the mean of its divisors is an integer number (1910693560860).

Almost surely, 2^{21102222110203} is an apocalyptic number.

21102222110203 is a deficient number, since it is larger than the sum of its proper divisors (1826100620117).

21102222110203 is a wasteful number, since it uses less digits than its factorization.

21102222110203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426161478 (or 426161465 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21102222110203 its reverse (30201122220112), we get a palindrome (51303344330315).

The spelling of 21102222110203 in words is "twenty-one trillion, one hundred two billion, two hundred twenty-two million, one hundred ten thousand, two hundred three".