1229791814971 has 2 divisors, whose sum is σ = 1229791814972. Its totient is φ = 1229791814970.

The previous prime is 1229791814969. The next prime is 1229791815011. The reversal of 1229791814971 is 1794181979221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1229791814971 - 2¹ = 1229791814969 is a prime.

Together with 1229791814969, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1229791814071) 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, 614895907485 + 614895907486.

It is an arithmetic number, because the mean of its divisors is an integer number (614895907486).

Almost surely, 2^{1229791814971} is an apocalyptic number.

1229791814971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1229791814971 is an equidigital number, since it uses as much as digits as its factorization.

1229791814971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4572288, while the sum is 61.

The spelling of 1229791814971 in words is "one trillion, two hundred twenty-nine billion, seven hundred ninety-one million, eight hundred fourteen thousand, nine hundred seventy-one".