212123310224 has 80 divisors (see below), whose sum is σ = 478740108672. Its totient is φ = 89161872384.

The previous prime is 212123310197. The next prime is 212123310263. The reversal of 212123310224 is 422013321212.

It is a self number, because there is not a number n which added to its sum of digits gives 212123310224.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22748027 + ... + 22757349.

Almost surely, 2^212123310224 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 212123310224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239370054336).

212123310224 is an abundant number, since it is smaller than the sum of its proper divisors (266616798448).

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

212123310224 is a wasteful number, since it uses less digits than its factorization.

212123310224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13224 (or 13218 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 212123310224 its reverse (422013321212), we get a palindrome (634136631436).

The spelling of 212123310224 in words is "two hundred twelve billion, one hundred twenty-three million, three hundred ten thousand, two hundred twenty-four".