12003112111 has 2 divisors, whose sum is σ = 12003112112. Its totient is φ = 12003112110.

The previous prime is 12003112073. The next prime is 12003112139. The reversal of 12003112111 is 11121130021.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12003112111 - 2²¹ = 12001014959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12003112091 and 12003112100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12003112171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6001556055 + 6001556056.

It is an arithmetic number, because the mean of its divisors is an integer number (6001556056).

Almost surely, 2^12003112111 is an apocalyptic number.

12003112111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12003112111 is an equidigital number, since it uses as much as digits as its factorization.

12003112111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 12003112111 its reverse (11121130021), we get a palindrome (23124242132).

The spelling of 12003112111 in words is "twelve billion, three million, one hundred twelve thousand, one hundred eleven".