1000011000091 has 2 divisors, whose sum is σ = 1000011000092. Its totient is φ = 1000011000090.

The previous prime is 1000011000089. The next prime is 1000011000103. The reversal of 1000011000091 is 1900001100001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1000011000091 - 2¹ = 1000011000089 is a prime.

Together with 1000011000089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1000011000491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500005500045 + 500005500046.

It is an arithmetic number, because the mean of its divisors is an integer number (500005500046).

Almost surely, 2^{1000011000091} is an apocalyptic number.

1000011000091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000011000091 is an equidigital number, since it uses as much as digits as its factorization.

1000011000091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9, while the sum is 13.

Adding to 1000011000091 its reverse (1900001100001), we get a palindrome (2900012100092).

The spelling of 1000011000091 in words is "one trillion, eleven million, ninety-one", and thus it is an aban number and an uban number.