22112221011102 has 96 divisors (see below), whose sum is σ = 50988538411200. Its totient is φ = 6901550853120.

The previous prime is 22112221011077. The next prime is 22112221011107. The reversal of 22112221011102 is 20111012221122.

22112221011102 is a `hidden beast` number, since 221 + 122 + 210 + 1 + 110 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112221011107) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 863037852 + ... + 863063472.

It is an arithmetic number, because the mean of its divisors is an integer number (531130608450).

Almost surely, 2^{22112221011102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22112221011102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25494269205600).

22112221011102 is an abundant number, since it is smaller than the sum of its proper divisors (28876317400098).

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

22112221011102 is a wasteful number, since it uses less digits than its factorization.

22112221011102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40018 (or 40015 counting only the distinct ones).

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

Adding to 22112221011102 its reverse (20111012221122), we get a palindrome (42223233232224).

The spelling of 22112221011102 in words is "twenty-two trillion, one hundred twelve billion, two hundred twenty-one million, eleven thousand, one hundred two".