213321321210 has 64 divisors (see below), whose sum is σ = 515623024512. Its totient is φ = 56480476416.

The previous prime is 213321321193. The next prime is 213321321229. The reversal of 213321321210 is 12123123312.

213321321210 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6450337 + ... + 6483323.

It is an arithmetic number, because the mean of its divisors is an integer number (8056609758).

Almost surely, 2^213321321210 is an apocalyptic number.

213321321210 is an abundant number, since it is smaller than the sum of its proper divisors (302301703302).

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

213321321210 is a wasteful number, since it uses less digits than its factorization.

213321321210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34527.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 213321321210 its reverse (12123123312), we get a palindrome (225444444522).

The spelling of 213321321210 in words is "two hundred thirteen billion, three hundred twenty-one million, three hundred twenty-one thousand, two hundred ten".