1111101091 has 2 divisors, whose sum is σ = 1111101092. Its totient is φ = 1111101090.

The previous prime is 1111101071. The next prime is 1111101127. The reversal of 1111101091 is 1901011111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111101091 - 2¹⁵ = 1111068323 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111101071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555550545 + 555550546.

It is an arithmetic number, because the mean of its divisors is an integer number (555550546).

Almost surely, 2^1111101091 is an apocalyptic number.

1111101091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111101091 is an equidigital number, since it uses as much as digits as its factorization.

1111101091 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 16.

The square root of 1111101091 is about 33333.1830313278. The cubic root of 1111101091 is about 1035.7410551604.

The spelling of 1111101091 in words is "one billion, one hundred eleven million, one hundred one thousand, ninety-one".