1121001199943 has 2 divisors, whose sum is σ = 1121001199944. Its totient is φ = 1121001199942.

The previous prime is 1121001199891. The next prime is 1121001199957. The reversal of 1121001199943 is 3499911001211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121001199943 - 2²⁰ = 1121000151367 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1121001199943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121001198943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560500599971 + 560500599972.

It is an arithmetic number, because the mean of its divisors is an integer number (560500599972).

Almost surely, 2^{1121001199943} is an apocalyptic number.

1121001199943 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121001199943 is an equidigital number, since it uses as much as digits as its factorization.

1121001199943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 41.

The spelling of 1121001199943 in words is "one trillion, one hundred twenty-one billion, one million, one hundred ninety-nine thousand, nine hundred forty-three".