1100011100989 has 2 divisors, whose sum is σ = 1100011100990. Its totient is φ = 1100011100988.

The previous prime is 1100011100971. The next prime is 1100011101041. The reversal of 1100011100989 is 9890011100011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 921056720089 + 178954380900 = 959717^2 + 423030^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100011100989 - 2⁹ = 1100011100477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1100011100989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1100011170989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550005550494 + 550005550495.

It is an arithmetic number, because the mean of its divisors is an integer number (550005550495).

Almost surely, 2^{1100011100989} is an apocalyptic number.

It is an amenable number.

1100011100989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100011100989 is an equidigital number, since it uses as much as digits as its factorization.

1100011100989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 31.

The spelling of 1100011100989 in words is "one trillion, one hundred billion, eleven million, one hundred thousand, nine hundred eighty-nine".