21030303020209 has 8 divisors (see below), whose sum is σ = 24223881095168. Its totient is φ = 17884037213280.

The previous prime is 21030303020201. The next prime is 21030303020227. The reversal of 21030303020209 is 90202030303012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21030303020209 - 2³ = 21030303020201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21030303020201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11828066052 + ... + 11828067829.

It is an arithmetic number, because the mean of its divisors is an integer number (3027985136896).

Almost surely, 2^{21030303020209} is an apocalyptic number.

It is an amenable number.

21030303020209 is a deficient number, since it is larger than the sum of its proper divisors (3193578074959).

21030303020209 is a wasteful number, since it uses less digits than its factorization.

21030303020209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23656134015.

The product of its (nonzero) digits is 1944, while the sum is 25.

The spelling of 21030303020209 in words is "twenty-one trillion, thirty billion, three hundred three million, twenty thousand, two hundred nine".