12219148258477 has 2 divisors, whose sum is σ = 12219148258478. Its totient is φ = 12219148258476.

The previous prime is 12219148258459. The next prime is 12219148258589. The reversal of 12219148258477 is 77485284191221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11459132197956 + 760016060521 = 3385134^2 + 871789^2 .

It is a cyclic number.

It is not a de Polignac number, because 12219148258477 - 2⁷ = 12219148258349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12219148258417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6109574129238 + 6109574129239.

It is an arithmetic number, because the mean of its divisors is an integer number (6109574129239).

Almost surely, 2^{12219148258477} is an apocalyptic number.

It is an amenable number.

12219148258477 is a deficient number, since it is larger than the sum of its proper divisors (1).

12219148258477 is an equidigital number, since it uses as much as digits as its factorization.

12219148258477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18063360, while the sum is 61.

The spelling of 12219148258477 in words is "twelve trillion, two hundred nineteen billion, one hundred forty-eight million, two hundred fifty-eight thousand, four hundred seventy-seven".