12321132111 has 12 divisors (see below), whose sum is σ = 17817357688. Its totient is φ = 8204780304.

The previous prime is 12321132091. The next prime is 12321132119. The reversal of 12321132111 is 11123112321.

12321132111 is a `hidden beast` number, since 12 + 321 + 1 + 321 + 11 = 666.

It is not a de Polignac number, because 12321132111 - 2¹⁰ = 12321131087 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 (12321132119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 767260 + ... + 783153.

Almost surely, 2^12321132111 is an apocalyptic number.

12321132111 is a deficient number, since it is larger than the sum of its proper divisors (5496225577).

12321132111 is a wasteful number, since it uses less digits than its factorization.

12321132111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551302 (or 1551299 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

Adding to 12321132111 its reverse (11123112321), we get a palindrome (23444244432).

The spelling of 12321132111 in words is "twelve billion, three hundred twenty-one million, one hundred thirty-two thousand, one hundred eleven".