12221020110112 has 96 divisors (see below), whose sum is σ = 26557529019840. Its totient is φ = 5489631252480.

The previous prime is 12221020110083. The next prime is 12221020110121. The reversal of 12221020110112 is 21101102012221.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 15007908 + ... + 15801244.

It is an arithmetic number, because the mean of its divisors is an integer number (276640927290).

Almost surely, 2^{12221020110112} 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 12221020110112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13278764509920).

12221020110112 is an abundant number, since it is smaller than the sum of its proper divisors (14336508909728).

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

12221020110112 is a wasteful number, since it uses less digits than its factorization.

12221020110112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793874 (or 793866 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12221020110112 its reverse (21101102012221), we get a palindrome (33322122122333).

The spelling of 12221020110112 in words is "twelve trillion, two hundred twenty-one billion, twenty million, one hundred ten thousand, one hundred twelve".