12091209127 has 2 divisors, whose sum is σ = 12091209128. Its totient is φ = 12091209126.

The previous prime is 12091209107. The next prime is 12091209131. The reversal of 12091209127 is 72190219021.

It is a happy number.

12091209127 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12091209127 - 2³¹ = 9943725479 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12091209092 and 12091209101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12091209107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6045604563 + 6045604564.

It is an arithmetic number, because the mean of its divisors is an integer number (6045604564).

Almost surely, 2^12091209127 is an apocalyptic number.

12091209127 is a deficient number, since it is larger than the sum of its proper divisors (1).

12091209127 is an equidigital number, since it uses as much as digits as its factorization.

12091209127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 34.

The spelling of 12091209127 in words is "twelve billion, ninety-one million, two hundred nine thousand, one hundred twenty-seven".