12221230112 has 96 divisors (see below), whose sum is σ = 30634329600. Its totient is φ = 4668023808.

The previous prime is 12221230051. The next prime is 12221230121. The reversal of 12221230112 is 21103212221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12089 + ... + 156807.

It is an arithmetic number, because the mean of its divisors is an integer number (319107600).

Almost surely, 2^12221230112 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 12221230112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15317164800).

12221230112 is an abundant number, since it is smaller than the sum of its proper divisors (18413099488).

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

12221230112 is a wasteful number, since it uses less digits than its factorization.

12221230112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144778 (or 144770 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12221230112 its reverse (21103212221), we get a palindrome (33324442333).

The spelling of 12221230112 in words is "twelve billion, two hundred twenty-one million, two hundred thirty thousand, one hundred twelve".