12132331111 has 8 divisors (see below), whose sum is σ = 12661812864. Its totient is φ = 11603015160.

The previous prime is 12132331097. The next prime is 12132331139. The reversal of 12132331111 is 11113323121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-12132331111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12132331181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121816 + ... + 197746.

It is an arithmetic number, because the mean of its divisors is an integer number (1582726608).

Almost surely, 2^12132331111 is an apocalyptic number.

12132331111 is a deficient number, since it is larger than the sum of its proper divisors (529481753).

12132331111 is an equidigital number, since it uses as much as digits as its factorization.

12132331111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82901.

The product of its digits is 108, while the sum is 19.

Adding to 12132331111 its reverse (11113323121), we get a palindrome (23245654232).

The spelling of 12132331111 in words is "twelve billion, one hundred thirty-two million, three hundred thirty-one thousand, one hundred eleven".