1121000011993 has 2 divisors, whose sum is σ = 1121000011994. Its totient is φ = 1121000011992.

The previous prime is 1121000011991. The next prime is 1121000012029. The reversal of 1121000011993 is 3991100001211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 777735263449 + 343264748544 = 881893^2 + 585888^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121000011993 - 2¹ = 1121000011991 is a prime.

It is a super-2 number, since 2×1121000011993² (a number of 25 digits) contains 22 as substring.

Together with 1121000011991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1121000011991) 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, 560500005996 + 560500005997.

It is an arithmetic number, because the mean of its divisors is an integer number (560500005997).

Almost surely, 2^{1121000011993} is an apocalyptic number.

It is an amenable number.

1121000011993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121000011993 is an equidigital number, since it uses as much as digits as its factorization.

1121000011993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 28.

The spelling of 1121000011993 in words is "one trillion, one hundred twenty-one billion, eleven thousand, nine hundred ninety-three".