12111320132 has 48 divisors (see below), whose sum is σ = 23010991920. Its totient is φ = 5555097600.

The previous prime is 12111320131. The next prime is 12111320159. The reversal of 12111320132 is 23102311121.

It can be written as a sum of positive squares in 8 ways, for example, as 2767391236 + 9343928896 = 52606^2 + 96664^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 12111320132.

It is not an unprimeable number, because it can be changed into a prime (12111320131) by changing a digit.

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, 5655782 + ... + 5657922.

It is an arithmetic number, because the mean of its divisors is an integer number (479395665).

Almost surely, 2^12111320132 is an apocalyptic number.

It is an amenable number.

12111320132 is a deficient number, since it is larger than the sum of its proper divisors (10899671788).

12111320132 is a wasteful number, since it uses less digits than its factorization.

12111320132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4232 (or 4230 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12111320132 its reverse (23102311121), we get a palindrome (35213631253).

The spelling of 12111320132 in words is "twelve billion, one hundred eleven million, three hundred twenty thousand, one hundred thirty-two".