12132111011 has 4 divisors (see below), whose sum is σ = 12252231024. Its totient is φ = 12011991000.

The previous prime is 12132111007. The next prime is 12132111023. The reversal of 12132111011 is 11011123121.

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

It is a cyclic number.

It is not a de Polignac number, because 12132111011 - 2² = 12132111007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12132111071) 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, 60059855 + ... + 60060056.

It is an arithmetic number, because the mean of its divisors is an integer number (3063057756).

Almost surely, 2^12132111011 is an apocalyptic number.

12132111011 is a deficient number, since it is larger than the sum of its proper divisors (120120013).

12132111011 is a wasteful number, since it uses less digits than its factorization.

12132111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120120012.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 12132111011 its reverse (11011123121), we get a palindrome (23143234132).

The spelling of 12132111011 in words is "twelve billion, one hundred thirty-two million, one hundred eleven thousand, eleven".