21222102110111 has 16 divisors (see below), whose sum is σ = 24292053576000. Its totient is φ = 18161721566208.

The previous prime is 21222102110081. The next prime is 21222102110117. The reversal of 21222102110111 is 11101120122212.

It is a cyclic number.

It is not a de Polignac number, because 21222102110111 - 2¹⁴ = 21222102093727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21222102110111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222102110117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16088315 + ... + 17357363.

It is an arithmetic number, because the mean of its divisors is an integer number (1518253348500).

Almost surely, 2^{21222102110111} is an apocalyptic number.

21222102110111 is a deficient number, since it is larger than the sum of its proper divisors (3069951465889).

21222102110111 is a wasteful number, since it uses less digits than its factorization.

21222102110111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272818.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 21222102110111 its reverse (11101120122212), we get a palindrome (32323222232323).

The spelling of 21222102110111 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred two million, one hundred ten thousand, one hundred eleven".