22221102111102 has 96 divisors (see below), whose sum is σ = 50792645423520. Its totient is φ = 7001566387200.

The previous prime is 22221102111073. The next prime is 22221102111127. The reversal of 22221102111102 is 20111120112222.

It is a super-2 number, since 2×22221102111102² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 357215602 + ... + 357277802.

It is an arithmetic number, because the mean of its divisors is an integer number (529090056495).

Almost surely, 2^{22221102111102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22221102111102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25396322711760).

22221102111102 is an abundant number, since it is smaller than the sum of its proper divisors (28571543312418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22221102111102 is a wasteful number, since it uses less digits than its factorization.

22221102111102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64538 (or 64535 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 22221102111102 its reverse (20111120112222), we get a palindrome (42332222223324).

The spelling of 22221102111102 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred two million, one hundred eleven thousand, one hundred two".