12222112110 has 96 divisors (see below), whose sum is σ = 31863362688. Its totient is φ = 2999018880.

The previous prime is 12222112103. The next prime is 12222112139. The reversal of 12222112110 is 1121122221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12222112110.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1674529 + ... + 1681811.

It is an arithmetic number, because the mean of its divisors is an integer number (331910028).

Almost surely, 2^12222112110 is an apocalyptic number.

12222112110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12222112110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15931681344).

12222112110 is an abundant number, since it is smaller than the sum of its proper divisors (19641250578).

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

12222112110 is a wasteful number, since it uses less digits than its factorization.

12222112110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7650 (or 7637 counting only the distinct ones).

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

Adding to 12222112110 its reverse (1121122221), we get a palindrome (13343234331).

The spelling of 12222112110 in words is "twelve billion, two hundred twenty-two million, one hundred twelve thousand, one hundred ten".