1009109119091 has 2 divisors, whose sum is σ = 1009109119092. Its totient is φ = 1009109119090.

The previous prime is 1009109119063. The next prime is 1009109119093. The reversal of 1009109119091 is 1909119019001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1009109119091 - 2¹⁰ = 1009109118067 is a prime.

It is a super-2 number, since 2×1009109119091² (a number of 25 digits) contains 22 as substring.

Together with 1009109119093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1009109119093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504554559545 + 504554559546.

It is an arithmetic number, because the mean of its divisors is an integer number (504554559546).

Almost surely, 2^{1009109119091} is an apocalyptic number.

1009109119091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1009109119091 is an equidigital number, since it uses as much as digits as its factorization.

1009109119091 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 1009109119091 in words is "one trillion, nine billion, one hundred nine million, one hundred nineteen thousand, ninety-one".