2012121099589 has 2 divisors, whose sum is σ = 2012121099590. Its totient is φ = 2012121099588.

The previous prime is 2012121099581. The next prime is 2012121099607. The reversal of 2012121099589 is 9859901212102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1540999476900 + 471121622689 = 1241370^2 + 686383^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012121099589 - 2³ = 2012121099581 is a prime.

It is a super-2 number, since 2×2012121099589² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2012121099581) 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, 1006060549794 + 1006060549795.

It is an arithmetic number, because the mean of its divisors is an integer number (1006060549795).

Almost surely, 2^{2012121099589} is an apocalyptic number.

It is an amenable number.

2012121099589 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012121099589 is an equidigital number, since it uses as much as digits as its factorization.

2012121099589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 49.

The spelling of 2012121099589 in words is "two trillion, twelve billion, one hundred twenty-one million, ninety-nine thousand, five hundred eighty-nine".