1000991199011 has 2 divisors, whose sum is σ = 1000991199012. Its totient is φ = 1000991199010.

The previous prime is 1000991198989. The next prime is 1000991199059. The reversal of 1000991199011 is 1109911990001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1000991199011 - 2¹⁴ = 1000991182627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1000991199011.

It is not a weakly prime, because it can be changed into another prime (1000991199911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500495599505 + 500495599506.

It is an arithmetic number, because the mean of its divisors is an integer number (500495599506).

Almost surely, 2^{1000991199011} is an apocalyptic number.

1000991199011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000991199011 is an equidigital number, since it uses as much as digits as its factorization.

1000991199011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6561, while the sum is 41.

The spelling of 1000991199011 in words is "one trillion, nine hundred ninety-one million, one hundred ninety-nine thousand, eleven".