1284370421771 has 2 divisors, whose sum is σ = 1284370421772. Its totient is φ = 1284370421770.

The previous prime is 1284370421683. The next prime is 1284370421779. The reversal of 1284370421771 is 1771240734821.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1771240734821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1284370421771 - 2²⁶ = 1284303312907 is a prime.

It is not a weakly prime, because it can be changed into another prime (1284370421779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642185210885 + 642185210886.

It is an arithmetic number, because the mean of its divisors is an integer number (642185210886).

Almost surely, 2^{1284370421771} is an apocalyptic number.

1284370421771 is a deficient number, since it is larger than the sum of its proper divisors (1).

1284370421771 is an equidigital number, since it uses as much as digits as its factorization.

1284370421771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 526848, while the sum is 47.

The spelling of 1284370421771 in words is "one trillion, two hundred eighty-four billion, three hundred seventy million, four hundred twenty-one thousand, seven hundred seventy-one".