1121199985837 has 2 divisors, whose sum is σ = 1121199985838. Its totient is φ = 1121199985836.

The previous prime is 1121199985783. The next prime is 1121199985861. The reversal of 1121199985837 is 7385899911211.

Together with previous prime (1121199985783) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1117278596196 + 3921389641 = 1057014^2 + 62621^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121199985837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121199985237) 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, 560599992918 + 560599992919.

It is an arithmetic number, because the mean of its divisors is an integer number (560599992919).

Almost surely, 2^{1121199985837} is an apocalyptic number.

It is an amenable number.

1121199985837 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121199985837 is an equidigital number, since it uses as much as digits as its factorization.

1121199985837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9797760, while the sum is 64.

The spelling of 1121199985837 in words is "one trillion, one hundred twenty-one billion, one hundred ninety-nine million, nine hundred eighty-five thousand, eight hundred thirty-seven".