12001002089 has 2 divisors, whose sum is σ = 12001002090. Its totient is φ = 12001002088.

The previous prime is 12001002073. The next prime is 12001002107. The reversal of 12001002089 is 98020010021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9431323225 + 2569678864 = 97115^2 + 50692^2 .

It is a cyclic number.

It is not a de Polignac number, because 12001002089 - 2⁴ = 12001002073 is a prime.

It is a super-2 number, since 2×12001002089² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12001002019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000501044 + 6000501045.

It is an arithmetic number, because the mean of its divisors is an integer number (6000501045).

Almost surely, 2^12001002089 is an apocalyptic number.

It is an amenable number.

12001002089 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001002089 is an equidigital number, since it uses as much as digits as its factorization.

12001002089 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 23.

The spelling of 12001002089 in words is "twelve billion, one million, two thousand, eighty-nine".