1000000011091 has 2 divisors, whose sum is σ = 1000000011092. Its totient is φ = 1000000011090.

The previous prime is 1000000011079. The next prime is 1000000011103. The reversal of 1000000011091 is 1901100000001.

It is a balanced prime because it is at equal distance from previous prime (1000000011079) and next prime (1000000011103).

It is a cyclic number.

It is not a de Polignac number, because 1000000011091 - 2¹⁵ = 999999978323 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000000011041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500000005545 + 500000005546.

It is an arithmetic number, because the mean of its divisors is an integer number (500000005546).

Almost surely, 2^{1000000011091} is an apocalyptic number.

1000000011091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000000011091 is an equidigital number, since it uses as much as digits as its factorization.

1000000011091 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 1000000011091 its reverse (1901100000001), we get a palindrome (2901100011092).

The spelling of 1000000011091 in words is "one trillion, eleven thousand, ninety-one".