1002220020209 has 4 divisors (see below), whose sum is σ = 1005786639780. Its totient is φ = 998653400640.

The previous prime is 1002220020181. The next prime is 1002220020251. The reversal of 1002220020209 is 9020200222001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 874885234609 + 127334785600 = 935353^2 + 356840^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002220020209 - 2¹² = 1002220016113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002220020409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1783309364 + ... + 1783309925.

It is an arithmetic number, because the mean of its divisors is an integer number (251446659945).

Almost surely, 2^{1002220020209} is an apocalyptic number.

It is an amenable number.

1002220020209 is a deficient number, since it is larger than the sum of its proper divisors (3566619571).

1002220020209 is an equidigital number, since it uses as much as digits as its factorization.

1002220020209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3566619570.

The product of its (nonzero) digits is 288, while the sum is 20.

The spelling of 1002220020209 in words is "one trillion, two billion, two hundred twenty million, twenty thousand, two hundred nine".