12275209691 has 2 divisors, whose sum is σ = 12275209692. Its totient is φ = 12275209690.

The previous prime is 12275209649. The next prime is 12275209757. The reversal of 12275209691 is 19690257221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12275209691 - 2⁶ = 12275209627 is a prime.

It is not a weakly prime, because it can be changed into another prime (12275209591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6137604845 + 6137604846.

It is an arithmetic number, because the mean of its divisors is an integer number (6137604846).

Almost surely, 2^12275209691 is an apocalyptic number.

12275209691 is a deficient number, since it is larger than the sum of its proper divisors (1).

12275209691 is an equidigital number, since it uses as much as digits as its factorization.

12275209691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 44.

The spelling of 12275209691 in words is "twelve billion, two hundred seventy-five million, two hundred nine thousand, six hundred ninety-one".