22101222110221 has 16 divisors (see below), whose sum is σ = 23632008883200. Its totient is φ = 20633538744000.

The previous prime is 22101222110207. The next prime is 22101222110257. The reversal of 22101222110221 is 12201122210122.

It is not a de Polignac number, because 22101222110221 - 2¹⁷ = 22101221979149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22101222110321) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 105773805 + ... + 105982546.

It is an arithmetic number, because the mean of its divisors is an integer number (1477000555200).

Almost surely, 2^{22101222110221} is an apocalyptic number.

It is an amenable number.

22101222110221 is a deficient number, since it is larger than the sum of its proper divisors (1530786772979).

22101222110221 is a wasteful number, since it uses less digits than its factorization.

22101222110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211756500.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22101222110221 its reverse (12201122210122), we get a palindrome (34302344320343).

Subtracting from 22101222110221 its reverse (12201122210122), we obtain a palindrome (9900099900099).

The spelling of 22101222110221 in words is "twenty-two trillion, one hundred one billion, two hundred twenty-two million, one hundred ten thousand, two hundred twenty-one".