11121020089 has 2 divisors, whose sum is σ = 11121020090. Its totient is φ = 11121020088.

The previous prime is 11121020087. The next prime is 11121020143. The reversal of 11121020089 is 98002012111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10239820864 + 881199225 = 101192^2 + 29685^2 .

It is a cyclic number.

It is not a de Polignac number, because 11121020089 - 2¹ = 11121020087 is a prime.

Together with 11121020087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11121020081) 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, 5560510044 + 5560510045.

It is an arithmetic number, because the mean of its divisors is an integer number (5560510045).

Almost surely, 2^11121020089 is an apocalyptic number.

It is an amenable number.

11121020089 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121020089 is an equidigital number, since it uses as much as digits as its factorization.

11121020089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 25.

It can be divided in two parts, 1112 and 1020089, that added together give a palindrome (1021201).

The spelling of 11121020089 in words is "eleven billion, one hundred twenty-one million, twenty thousand, eighty-nine".