2000120009 has 2 divisors, whose sum is σ = 2000120010. Its totient is φ = 2000120008.

The previous prime is 2000119991. The next prime is 2000120011. The reversal of 2000120009 is 9000210002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1600000000 + 400120009 = 40000^2 + 20003^2 .

It is a cyclic number.

It is not a de Polignac number, because 2000120009 - 2⁸ = 2000119753 is a prime.

Together with 2000120011, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2000119975 and 2000120002.

It is not a weakly prime, because it can be changed into another prime (2000120029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000060004 + 1000060005.

It is an arithmetic number, because the mean of its divisors is an integer number (1000060005).

Almost surely, 2^2000120009 is an apocalyptic number.

It is an amenable number.

2000120009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2000120009 is an equidigital number, since it uses as much as digits as its factorization.

2000120009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 2000120009 is about 44722.7012712783. The cubic root of 2000120009 is about 1259.9462497017.

The spelling of 2000120009 in words is "two billion, one hundred twenty thousand, nine".