12111019 has 2 divisors, whose sum is σ = 12111020. Its totient is φ = 12111018.

The previous prime is 12111017. The next prime is 12111023. The reversal of 12111019 is 91011121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12111019 - 2¹ = 12111017 is a prime.

It is a super-2 number, since 2×12111019² = 293353562436722, which contains 22 as substring.

Together with 12111017, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12110993 and 12111011.

It is not a weakly prime, because it can be changed into another prime (12111017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055509 + 6055510.

It is an arithmetic number, because the mean of its divisors is an integer number (6055510).

Almost surely, 2^12111019 is an apocalyptic number.

12111019 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111019 is an equidigital number, since it uses as much as digits as its factorization.

12111019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 16.

The square root of 12111019 is about 3480.0889356452. The cubic root of 12111019 is about 229.6467102879.

The spelling of 12111019 in words is "twelve million, one hundred eleven thousand, nineteen".