12110221312 has 104 divisors (see below), whose sum is σ = 27888192576. Its totient is φ = 5150539776.

The previous prime is 12110221309. The next prime is 12110221363. The reversal of 12110221312 is 21312201121.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3926523 + ... + 3929605.

Almost surely, 2^12110221312 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 12110221312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13944096288).

12110221312 is an abundant number, since it is smaller than the sum of its proper divisors (15777971264).

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

12110221312 is an equidigital number, since it uses as much as digits as its factorization.

12110221312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3251 (or 3229 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12110221312 its reverse (21312201121), we get a palindrome (33422422433).

The spelling of 12110221312 in words is "twelve billion, one hundred ten million, two hundred twenty-one thousand, three hundred twelve".