213321443244 has 192 divisors, whose sum is σ = 650871782400. Its totient is φ = 52852165632.

The previous prime is 213321443191. The next prime is 213321443263. The reversal of 213321443244 is 442344123312.

213321443244 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×213321443244² (a number of 23 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1080687 + ... + 1262745.

It is an arithmetic number, because the mean of its divisors is an integer number (3389957200).

It is a self-describing number.

Almost surely, 2^213321443244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213321443244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325435891200).

213321443244 is an abundant number, since it is smaller than the sum of its proper divisors (437550339156).

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

213321443244 is a wasteful number, since it uses less digits than its factorization.

213321443244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182152 (or 182150 counting only the distinct ones).

The product of its digits is 55296, while the sum is 33.

Adding to 213321443244 its reverse (442344123312), we get a palindrome (655665566556).

The spelling of 213321443244 in words is "two hundred thirteen billion, three hundred twenty-one million, four hundred forty-three thousand, two hundred forty-four".