912421242091 has 2 divisors, whose sum is σ = 912421242092. Its totient is φ = 912421242090.

The previous prime is 912421242071. The next prime is 912421242133. The reversal of 912421242091 is 190242124219.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-912421242091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 912421242091.

It is not a weakly prime, because it can be changed into another prime (912421242001) 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, 456210621045 + 456210621046.

It is an arithmetic number, because the mean of its divisors is an integer number (456210621046).

Almost surely, 2^912421242091 is an apocalyptic number.

912421242091 is a deficient number, since it is larger than the sum of its proper divisors (1).

912421242091 is an equidigital number, since it uses as much as digits as its factorization.

912421242091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 912421242091 in words is "nine hundred twelve billion, four hundred twenty-one million, two hundred forty-two thousand, ninety-one".