12195388903 has 2 divisors, whose sum is σ = 12195388904. Its totient is φ = 12195388902.

The previous prime is 12195388861. The next prime is 12195389083. The reversal of 12195388903 is 30988359121.

Together with next prime (12195389083) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12195388903 - 2¹³ = 12195380711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12195380903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6097694451 + 6097694452.

It is an arithmetic number, because the mean of its divisors is an integer number (6097694452).

Almost surely, 2^12195388903 is an apocalyptic number.

12195388903 is a deficient number, since it is larger than the sum of its proper divisors (1).

12195388903 is an equidigital number, since it uses as much as digits as its factorization.

12195388903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 49.

The spelling of 12195388903 in words is "twelve billion, one hundred ninety-five million, three hundred eighty-eight thousand, nine hundred three".