212123510250 has 128 divisors (see below), whose sum is σ = 535039464960. Its totient is φ = 55971648000.

The previous prime is 212123510213. The next prime is 212123510279. The reversal of 212123510250 is 52015321212.

212123510250 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 212123510250.

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, 86899030 + ... + 86901470.

It is an arithmetic number, because the mean of its divisors is an integer number (4179995820).

Almost surely, 2^212123510250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212123510250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267519732480).

212123510250 is an abundant number, since it is smaller than the sum of its proper divisors (322915954710).

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

212123510250 is a wasteful number, since it uses less digits than its factorization.

212123510250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3633 (or 3623 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 212123510250 its reverse (52015321212), we get a palindrome (264138831462).

The spelling of 212123510250 in words is "two hundred twelve billion, one hundred twenty-three million, five hundred ten thousand, two hundred fifty".