213212223310424 has 64 divisors (see below), whose sum is σ = 434633815526400. Its totient is φ = 97466773014144.

The previous prime is 213212223310421. The next prime is 213212223310439. The reversal of 213212223310424 is 424013322212312.

It is a happy number.

It is a super-2 number, since 2×213212223310424² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213212223310421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54724907 + ... + 58491365.

It is an arithmetic number, because the mean of its divisors is an integer number (6791153367600).

Almost surely, 2^{213212223310424} 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 213212223310424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217316907763200).

213212223310424 is an abundant number, since it is smaller than the sum of its proper divisors (221421592215976).

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

213212223310424 is a wasteful number, since it uses less digits than its factorization.

213212223310424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3771672 (or 3771668 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 213212223310424 its reverse (424013322212312), we get a palindrome (637225545522736).

The spelling of 213212223310424 in words is "two hundred thirteen trillion, two hundred twelve billion, two hundred twenty-three million, three hundred ten thousand, four hundred twenty-four".