1101111110989 has 2 divisors, whose sum is σ = 1101111110990. Its totient is φ = 1101111110988.

The previous prime is 1101111110947. The next prime is 1101111111043. The reversal of 1101111110989 is 9890111111011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1060168826025 + 40942284964 = 1029645^2 + 202342^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1101111110989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101111110389) 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, 550555555494 + 550555555495.

It is an arithmetic number, because the mean of its divisors is an integer number (550555555495).

Almost surely, 2^{1101111110989} is an apocalyptic number.

It is an amenable number.

1101111110989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101111110989 is an equidigital number, since it uses as much as digits as its factorization.

1101111110989 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 34.

The spelling of 1101111110989 in words is "one trillion, one hundred one billion, one hundred eleven million, one hundred ten thousand, nine hundred eighty-nine".