11112121110989 has 2 divisors, whose sum is σ = 11112121110990. Its totient is φ = 11112121110988.

The previous prime is 11112121110977. The next prime is 11112121111057. The reversal of 11112121110989 is 98901112121111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11061996617764 + 50124493225 = 3325958^2 + 223885^2 .

It is a cyclic number.

It is not a de Polignac number, because 11112121110989 - 2⁴ = 11112121110973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11112121110689) 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, 5556060555494 + 5556060555495.

It is an arithmetic number, because the mean of its divisors is an integer number (5556060555495).

Almost surely, 2^{11112121110989} is an apocalyptic number.

It is an amenable number.

11112121110989 is a deficient number, since it is larger than the sum of its proper divisors (1).

11112121110989 is an equidigital number, since it uses as much as digits as its factorization.

11112121110989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 38.

The spelling of 11112121110989 in words is "eleven trillion, one hundred twelve billion, one hundred twenty-one million, one hundred ten thousand, nine hundred eighty-nine".