1121431698851 has 2 divisors, whose sum is σ = 1121431698852. Its totient is φ = 1121431698850.

The previous prime is 1121431698833. The next prime is 1121431698889. The reversal of 1121431698851 is 1588961341211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121431698851 - 2³⁸ = 846553791907 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1121431698851.

It is not a weakly prime, because it can be changed into another prime (1121431695851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560715849425 + 560715849426.

It is an arithmetic number, because the mean of its divisors is an integer number (560715849426).

Almost surely, 2^{1121431698851} is an apocalyptic number.

1121431698851 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121431698851 is an equidigital number, since it uses as much as digits as its factorization.

1121431698851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 50.

The spelling of 1121431698851 in words is "one trillion, one hundred twenty-one billion, four hundred thirty-one million, six hundred ninety-eight thousand, eight hundred fifty-one".