1002020220109 has 2 divisors, whose sum is σ = 1002020220110. Its totient is φ = 1002020220108.

The previous prime is 1002020220073. The next prime is 1002020220161. The reversal of 1002020220109 is 9010220202001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 998844334084 + 3175886025 = 999422^2 + 56355^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002020220109 - 2²³ = 1002011831501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002020229109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501010110054 + 501010110055.

It is an arithmetic number, because the mean of its divisors is an integer number (501010110055).

Almost surely, 2^{1002020220109} is an apocalyptic number.

It is an amenable number.

1002020220109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002020220109 is an equidigital number, since it uses as much as digits as its factorization.

1002020220109 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 1002020220109 in words is "one trillion, two billion, twenty million, two hundred twenty thousand, one hundred nine".