10091011109 has 2 divisors, whose sum is σ = 10091011110. Its totient is φ = 10091011108.

The previous prime is 10091011069. The next prime is 10091011121. The reversal of 10091011109 is 90111019001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9900847009 + 190164100 = 99503^2 + 13790^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10091011109 is a prime.

It is a super-2 number, since 2×10091011109² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10091010109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5045505554 + 5045505555.

It is an arithmetic number, because the mean of its divisors is an integer number (5045505555).

Almost surely, 2^10091011109 is an apocalyptic number.

It is an amenable number.

10091011109 is a deficient number, since it is larger than the sum of its proper divisors (1).

10091011109 is an equidigital number, since it uses as much as digits as its factorization.

10091011109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81, while the sum is 23.

The spelling of 10091011109 in words is "ten billion, ninety-one million, eleven thousand, one hundred nine".