12011111242 has 16 divisors (see below), whose sum is σ = 19404370440. Its totient is φ = 5543073792.

The previous prime is 12011111207. The next prime is 12011111261. The reversal of 12011111242 is 24211111021.

12011111242 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 11229852841 + 781258401 = 105971^2 + 27951^2 .

It is an unprimeable number.

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, 533118 + ... + 555190.

Almost surely, 2^12011111242 is an apocalyptic number.

12011111242 is a deficient number, since it is larger than the sum of its proper divisors (7393259198).

12011111242 is a wasteful number, since it uses less digits than its factorization.

12011111242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43017.

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

Adding to 12011111242 its reverse (24211111021), we get a palindrome (36222222263).

The spelling of 12011111242 in words is "twelve billion, eleven million, one hundred eleven thousand, two hundred forty-two".