21302320220209 has 8 divisors (see below), whose sum is σ = 24360472271168. Its totient is φ = 18247909031280.

The previous prime is 21302320220183. The next prime is 21302320220213. The reversal of 21302320220209 is 90202202320312.

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

It is a cyclic number.

It is not a de Polignac number, because 21302320220209 - 2¹⁵ = 21302320187441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21302320220609) 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, 935203302 + ... + 935226079.

It is an arithmetic number, because the mean of its divisors is an integer number (3045059033896).

Almost surely, 2^{21302320220209} is an apocalyptic number.

It is an amenable number.

21302320220209 is a deficient number, since it is larger than the sum of its proper divisors (3058152050959).

21302320220209 is a wasteful number, since it uses less digits than its factorization.

21302320220209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1870431015.

The product of its (nonzero) digits is 5184, while the sum is 28.

The spelling of 21302320220209 in words is "twenty-one trillion, three hundred two billion, three hundred twenty million, two hundred twenty thousand, two hundred nine".