1002020111089 has 2 divisors, whose sum is σ = 1002020111090. Its totient is φ = 1002020111088.

The previous prime is 1002020111063. The next prime is 1002020111129. The reversal of 1002020111089 is 9801110202001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 645825998689 + 356194112400 = 803633^2 + 596820^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002020111089 - 2⁹ = 1002020110577 is a prime.

It is not a weakly prime, because it can be changed into another prime (1002020111489) 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, 501010055544 + 501010055545.

It is an arithmetic number, because the mean of its divisors is an integer number (501010055545).

Almost surely, 2^{1002020111089} is an apocalyptic number.

It is an amenable number.

1002020111089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002020111089 is an equidigital number, since it uses as much as digits as its factorization.

1002020111089 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.

The spelling of 1002020111089 in words is "one trillion, two billion, twenty million, one hundred eleven thousand, eighty-nine".