1002120020209 has 32 divisors (see below), whose sum is σ = 1268490304512. Its totient is φ = 768947256000.

The previous prime is 1002120020197. The next prime is 1002120020287. The reversal of 1002120020209 is 9020200212001.

It is not a de Polignac number, because 1002120020209 - 2¹⁹ = 1002119495921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002120060209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15294699 + ... + 15360079.

It is an arithmetic number, because the mean of its divisors is an integer number (39640322016).

Almost surely, 2^{1002120020209} is an apocalyptic number.

It is an amenable number.

1002120020209 is a deficient number, since it is larger than the sum of its proper divisors (266370284303).

1002120020209 is a wasteful number, since it uses less digits than its factorization.

1002120020209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68437.

The product of its (nonzero) digits is 144, while the sum is 19.

The spelling of 1002120020209 in words is "one trillion, two billion, one hundred twenty million, twenty thousand, two hundred nine".