213220303209 has 16 divisors (see below), whose sum is σ = 334463221440. Its totient is φ = 133785288000.

The previous prime is 213220303157. The next prime is 213220303271. The reversal of 213220303209 is 902303022312.

213220303209 is a `hidden beast` number, since 2 + 132 + 20 + 303 + 209 = 666.

213220303209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213220303209 - 2⁹ = 213220302697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213220313209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232265667 + ... + 232266584.

It is an arithmetic number, because the mean of its divisors is an integer number (20903951340).

Almost surely, 2^213220303209 is an apocalyptic number.

It is an amenable number.

213220303209 is a deficient number, since it is larger than the sum of its proper divisors (121242918231).

213220303209 is a wasteful number, since it uses less digits than its factorization.

213220303209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464532277 (or 464532271 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The spelling of 213220303209 in words is "two hundred thirteen billion, two hundred twenty million, three hundred three thousand, two hundred nine".