22011122112 has 112 divisors (see below), whose sum is σ = 66696092160. Its totient is φ = 6275791872.

The previous prime is 22011122069. The next prime is 22011122149. The reversal of 22011122112 is 21122111022.

It is a tau number, because it is divible by the number of its divisors (112).

It is a junction number, because it is equal to n+sod(n) for n = 22011122091 and 22011122100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 637714 + ... + 671342.

Almost surely, 2^22011122112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22011122112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33348046080).

22011122112 is an abundant number, since it is smaller than the sum of its proper divisors (44684970048).

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

22011122112 is a wasteful number, since it uses less digits than its factorization.

22011122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34138 (or 34128 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22011122112 its reverse (21122111022), we get a palindrome (43133233134).

The spelling of 22011122112 in words is "twenty-two billion, eleven million, one hundred twenty-two thousand, one hundred twelve".