12111644132 has 48 divisors (see below), whose sum is σ = 24755673600. Its totient is φ = 5076774912.

The previous prime is 12111644099. The next prime is 12111644147. The reversal of 12111644132 is 23144611121.

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, 2989244 + ... + 2993292.

It is an arithmetic number, because the mean of its divisors is an integer number (515743200).

Almost surely, 2^12111644132 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 12111644132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12377836800).

12111644132 is an abundant number, since it is smaller than the sum of its proper divisors (12644029468).

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

12111644132 is a wasteful number, since it uses less digits than its factorization.

12111644132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6380 (or 6378 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

The spelling of 12111644132 in words is "twelve billion, one hundred eleven million, six hundred forty-four thousand, one hundred thirty-two".