212144202330 has 128 divisors (see below), whose sum is σ = 529850695680. Its totient is φ = 54316604160.

The previous prime is 212144202301. The next prime is 212144202341. The reversal of 212144202330 is 33202441212.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 212144202330.

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, 26921331 + ... + 26929209.

It is an arithmetic number, because the mean of its divisors is an integer number (4139458560).

Almost surely, 2^212144202330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212144202330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264925347840).

212144202330 is an abundant number, since it is smaller than the sum of its proper divisors (317706493350).

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

212144202330 is a wasteful number, since it uses less digits than its factorization.

212144202330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8244.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 212144202330 its reverse (33202441212), we get a palindrome (245346643542).

The spelling of 212144202330 in words is "two hundred twelve billion, one hundred forty-four million, two hundred two thousand, three hundred thirty".