1011101108989 has 2 divisors, whose sum is σ = 1011101108990. Its totient is φ = 1011101108988.

The previous prime is 1011101108971. The next prime is 1011101108999. The reversal of 1011101108989 is 9898011011101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 980183161764 + 30917947225 = 990042^2 + 175835^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011101108989 - 2⁷ = 1011101108861 is a prime.

It is a super-3 number, since 3×1011101108989³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011101108999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505550554494 + 505550554495.

It is an arithmetic number, because the mean of its divisors is an integer number (505550554495).

Almost surely, 2^{1011101108989} is an apocalyptic number.

It is an amenable number.

1011101108989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011101108989 is an equidigital number, since it uses as much as digits as its factorization.

1011101108989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 40.

The spelling of 1011101108989 in words is "one trillion, eleven billion, one hundred one million, one hundred eight thousand, nine hundred eighty-nine".