12011211112 has 32 divisors (see below), whose sum is σ = 22610881800. Its totient is φ = 5981681664.

The previous prime is 12011211109. The next prime is 12011211119. The reversal of 12011211112 is 21111211021.

It is a happy number.

12011211112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 9168828516 + 2842382596 = 95754^2 + 53314^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12011211092 and 12011211101.

It is not an unprimeable number, because it can be changed into a prime (12011211119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3861814 + ... + 3864922.

Almost surely, 2^12011211112 is an apocalyptic number.

It is an amenable number.

12011211112 is a deficient number, since it is larger than the sum of its proper divisors (10599670688).

12011211112 is a wasteful number, since it uses less digits than its factorization.

12011211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4885 (or 4881 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12011211112 its reverse (21111211021), we get a palindrome (33122422133).

Subtracting 12011211112 from its reverse (21111211021), we obtain a palindrome (9099999909).

The spelling of 12011211112 in words is "twelve billion, eleven million, two hundred eleven thousand, one hundred twelve".