1000200020009 has 2 divisors, whose sum is σ = 1000200020010. Its totient is φ = 1000200020008.

The previous prime is 1000200019997. The next prime is 1000200020041. The reversal of 1000200020009 is 9000200020001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 953825689600 + 46374330409 = 976640^2 + 215347^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000200020009 - 2³² = 995905052713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1000200019975 and 1000200020002.

It is not a weakly prime, because it can be changed into another prime (1000200020509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500100010004 + 500100010005.

It is an arithmetic number, because the mean of its divisors is an integer number (500100010005).

Almost surely, 2^{1000200020009} is an apocalyptic number.

It is an amenable number.

1000200020009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000200020009 is an equidigital number, since it uses as much as digits as its factorization.

1000200020009 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 spelling of 1000200020009 in words is "one trillion, two hundred million, twenty thousand, nine".