1101010101109 has 2 divisors, whose sum is σ = 1101010101110. Its totient is φ = 1101010101108.

The previous prime is 1101010101101. The next prime is 1101010101127. The reversal of 1101010101109 is 9011010101011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1068283482084 + 32726619025 = 1033578^2 + 180905^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101010101109 - 2³ = 1101010101101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1101010101092 and 1101010101101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101010101101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550505050554 + 550505050555.

It is an arithmetic number, because the mean of its divisors is an integer number (550505050555).

Almost surely, 2^{1101010101109} is an apocalyptic number.

It is an amenable number.

1101010101109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101010101109 is an equidigital number, since it uses as much as digits as its factorization.

1101010101109 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 spelling of 1101010101109 in words is "one trillion, one hundred one billion, ten million, one hundred one thousand, one hundred nine".