2012195111 has 2 divisors, whose sum is σ = 2012195112. Its totient is φ = 2012195110.

The previous prime is 2012195069. The next prime is 2012195113. The reversal of 2012195111 is 1115912102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2012195111 is a prime.

Together with 2012195113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2012195113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006097555 + 1006097556.

It is an arithmetic number, because the mean of its divisors is an integer number (1006097556).

Almost surely, 2^2012195111 is an apocalyptic number.

2012195111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012195111 is an equidigital number, since it uses as much as digits as its factorization.

2012195111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 23.

The square root of 2012195111 is about 44857.4978236638. The cubic root of 2012195111 is about 1262.4766753982.

The spelling of 2012195111 in words is "two billion, twelve million, one hundred ninety-five thousand, one hundred eleven".