12219997535771 has 2 divisors, whose sum is σ = 12219997535772. Its totient is φ = 12219997535770.

The previous prime is 12219997535761. The next prime is 12219997535789. The reversal of 12219997535771 is 17753579991221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12219997535771 is a prime.

It is not a weakly prime, because it can be changed into another prime (12219997535731) 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, 6109998767885 + 6109998767886.

It is an arithmetic number, because the mean of its divisors is an integer number (6109998767886).

Almost surely, 2^{12219997535771} is an apocalyptic number.

12219997535771 is a deficient number, since it is larger than the sum of its proper divisors (1).

12219997535771 is an equidigital number, since it uses as much as digits as its factorization.

12219997535771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75014100, while the sum is 68.

The spelling of 12219997535771 in words is "twelve trillion, two hundred nineteen billion, nine hundred ninety-seven million, five hundred thirty-five thousand, seven hundred seventy-one".