213220320330 has 64 divisors (see below), whose sum is σ = 534339514368. Its totient is φ = 54349796160.

The previous prime is 213220320317. The next prime is 213220320349. The reversal of 213220320330 is 33023022312.

213220320330 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×213220320330² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213220320297 and 213220320306.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 922125 + ... + 1129935.

It is an arithmetic number, because the mean of its divisors is an integer number (8349054912).

Almost surely, 2^213220320330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213220320330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267169757184).

213220320330 is an abundant number, since it is smaller than the sum of its proper divisors (321119194038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213220320330 is a wasteful number, since it uses less digits than its factorization.

213220320330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209331.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 213220320330 its reverse (33023022312), we get a palindrome (246243342642).

The spelling of 213220320330 in words is "two hundred thirteen billion, two hundred twenty million, three hundred twenty thousand, three hundred thirty".