11011111129 has 2 divisors, whose sum is σ = 11011111130. Its totient is φ = 11011111128.

The previous prime is 11011111121. The next prime is 11011111141. The reversal of 11011111129 is 92111111011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10889339904 + 121771225 = 104352^2 + 11035^2 .

It is a cyclic number.

It is not a de Polignac number, because 11011111129 - 2³ = 11011111121 is a prime.

It is not a weakly prime, because it can be changed into another prime (11011111121) 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, 5505555564 + 5505555565.

It is an arithmetic number, because the mean of its divisors is an integer number (5505555565).

Almost surely, 2^11011111129 is an apocalyptic number.

It is an amenable number.

11011111129 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011111129 is an equidigital number, since it uses as much as digits as its factorization.

11011111129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 19.

The spelling of 11011111129 in words is "eleven billion, eleven million, one hundred eleven thousand, one hundred twenty-nine".