99911090011 has 2 divisors, whose sum is σ = 99911090012. Its totient is φ = 99911090010.

The previous prime is 99911090009. The next prime is 99911090017. The reversal of 99911090011 is 11009011999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99911090011 - 2¹ = 99911090009 is a prime.

It is a super-2 number, since 2×99911090011² (a number of 23 digits) contains 22 as substring.

Together with 99911090009, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (99911090017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49955545005 + 49955545006.

It is an arithmetic number, because the mean of its divisors is an integer number (49955545006).

Almost surely, 2^99911090011 is an apocalyptic number.

99911090011 is a deficient number, since it is larger than the sum of its proper divisors (1).

99911090011 is an equidigital number, since it uses as much as digits as its factorization.

99911090011 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 40.

The spelling of 99911090011 in words is "ninety-nine billion, nine hundred eleven million, ninety thousand, eleven".