12219865903493 has 2 divisors, whose sum is σ = 12219865903494. Its totient is φ = 12219865903492.

The previous prime is 12219865903471. The next prime is 12219865903519. The reversal of 12219865903493 is 39430956891221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12033947124004 + 185918779489 = 3468998^2 + 431183^2 .

It is a cyclic number.

It is not a de Polignac number, because 12219865903493 - 2⁶ = 12219865903429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12219865903463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6109932951746 + 6109932951747.

It is an arithmetic number, because the mean of its divisors is an integer number (6109932951747).

Almost surely, 2^{12219865903493} is an apocalyptic number.

It is an amenable number.

12219865903493 is a deficient number, since it is larger than the sum of its proper divisors (1).

12219865903493 is an equidigital number, since it uses as much as digits as its factorization.

12219865903493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25194240, while the sum is 62.

The spelling of 12219865903493 in words is "twelve trillion, two hundred nineteen billion, eight hundred sixty-five million, nine hundred three thousand, four hundred ninety-three".