12011211187 has 2 divisors, whose sum is σ = 12011211188. Its totient is φ = 12011211186.

The previous prime is 12011211151. The next prime is 12011211221. The reversal of 12011211187 is 78111211021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12011211187 - 2¹¹ = 12011209139 is a prime.

It is not a weakly prime, because it can be changed into another prime (12011211137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005605593 + 6005605594.

It is an arithmetic number, because the mean of its divisors is an integer number (6005605594).

Almost surely, 2^12011211187 is an apocalyptic number.

12011211187 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011211187 is an equidigital number, since it uses as much as digits as its factorization.

12011211187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 25.

The spelling of 12011211187 in words is "twelve billion, eleven million, two hundred eleven thousand, one hundred eighty-seven".