1200011020209 has 12 divisors (see below), whose sum is σ = 1808712262656. Its totient is φ = 765224418552.

The previous prime is 1200011020139. The next prime is 1200011020211. The reversal of 1200011020209 is 9020201100021.

It is not a de Polignac number, because 1200011020209 - 2⁷ = 1200011020081 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1200011020191 and 1200011020200.

It is not an unprimeable number, because it can be changed into a prime (1200011020279) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2898577137 + ... + 2898577550.

It is an arithmetic number, because the mean of its divisors is an integer number (150726021888).

Almost surely, 2^{1200011020209} is an apocalyptic number.

It is an amenable number.

1200011020209 is a deficient number, since it is larger than the sum of its proper divisors (608701242447).

1200011020209 is a wasteful number, since it uses less digits than its factorization.

1200011020209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5797154716 (or 5797154713 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 1200011020209 in words is "one trillion, two hundred billion, eleven million, twenty thousand, two hundred nine".