12091330187 has 2 divisors, whose sum is σ = 12091330188. Its totient is φ = 12091330186.

The previous prime is 12091330177. The next prime is 12091330201. The reversal of 12091330187 is 78103319021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12091330187 - 2⁴ = 12091330171 is a prime.

It is not a weakly prime, because it can be changed into another prime (12091330177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6045665093 + 6045665094.

It is an arithmetic number, because the mean of its divisors is an integer number (6045665094).

Almost surely, 2^12091330187 is an apocalyptic number.

12091330187 is a deficient number, since it is larger than the sum of its proper divisors (1).

12091330187 is an equidigital number, since it uses as much as digits as its factorization.

12091330187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 35.

The spelling of 12091330187 in words is "twelve billion, ninety-one million, three hundred thirty thousand, one hundred eighty-seven".