12265822691 has 2 divisors, whose sum is σ = 12265822692. Its totient is φ = 12265822690.

The previous prime is 12265822649. The next prime is 12265822717. The reversal of 12265822691 is 19622856221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12265822691 - 2²⁶ = 12198713827 is a prime.

It is not a weakly prime, because it can be changed into another prime (12265822631) 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, 6132911345 + 6132911346.

It is an arithmetic number, because the mean of its divisors is an integer number (6132911346).

Almost surely, 2^12265822691 is an apocalyptic number.

12265822691 is a deficient number, since it is larger than the sum of its proper divisors (1).

12265822691 is an equidigital number, since it uses as much as digits as its factorization.

12265822691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 44.

The spelling of 12265822691 in words is "twelve billion, two hundred sixty-five million, eight hundred twenty-two thousand, six hundred ninety-one".