111001111002109 has 2 divisors, whose sum is σ = 111001111002110. Its totient is φ = 111001111002108.

The previous prime is 111001111002083. The next prime is 111001111002113. The reversal of 111001111002109 is 901200111100111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108341347951225 + 2659763050884 = 10408715^2 + 1630878^2 .

It is a cyclic number.

It is not a de Polignac number, because 111001111002109 - 2⁷ = 111001111001981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111001111002709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55500555501054 + 55500555501055.

It is an arithmetic number, because the mean of its divisors is an integer number (55500555501055).

Almost surely, 2^{111001111002109} is an apocalyptic number.

It is an amenable number.

111001111002109 is a deficient number, since it is larger than the sum of its proper divisors (1).

111001111002109 is an equidigital number, since it uses as much as digits as its factorization.

111001111002109 is an evil number, because the sum of its binary digits is even.

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

The spelling of 111001111002109 in words is "one hundred eleven trillion, one billion, one hundred eleven million, two thousand, one hundred nine".