12113432011 has 4 divisors (see below), whose sum is σ = 12640102992. Its totient is φ = 11586761032.

The previous prime is 12113431973. The next prime is 12113432021. The reversal of 12113432011 is 11023431121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12113432011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12113432011.

It is not an unprimeable number, because it can be changed into a prime (12113432021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263335456 + ... + 263335501.

It is an arithmetic number, because the mean of its divisors is an integer number (3160025748).

Almost surely, 2^12113432011 is an apocalyptic number.

12113432011 is a deficient number, since it is larger than the sum of its proper divisors (526670981).

12113432011 is an equidigital number, since it uses as much as digits as its factorization.

12113432011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526670980.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 12113432011 its reverse (11023431121), we get a palindrome (23136863132).

The spelling of 12113432011 in words is "twelve billion, one hundred thirteen million, four hundred thirty-two thousand, eleven".