12000032111 has 4 divisors (see below), whose sum is σ = 12007275792. Its totient is φ = 11992788432.

The previous prime is 12000032089. The next prime is 12000032117. The reversal of 12000032111 is 11123000021.

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-12000032111 is a prime.

It is a super-2 number, since 2×12000032111² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12000032092 and 12000032101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000032117) 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, 3619355 + ... + 3622668.

It is an arithmetic number, because the mean of its divisors is an integer number (3001818948).

Almost surely, 2^12000032111 is an apocalyptic number.

12000032111 is a deficient number, since it is larger than the sum of its proper divisors (7243681).

12000032111 is an equidigital number, since it uses as much as digits as its factorization.

12000032111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7243680.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 12000032111 its reverse (11123000021), we get a palindrome (23123032132).

The spelling of 12000032111 in words is "twelve billion, thirty-two thousand, one hundred eleven".