211443220230 has 96 divisors (see below), whose sum is σ = 563314366944. Its totient is φ = 50751360000.

The previous prime is 211443220181. The next prime is 211443220267. The reversal of 211443220230 is 32022344112.

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 211443220230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78270 + ... + 654990.

It is an arithmetic number, because the mean of its divisors is an integer number (5867857989).

Almost surely, 2^211443220230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211443220230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281657183472).

211443220230 is an abundant number, since it is smaller than the sum of its proper divisors (351871146714).

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

211443220230 is a wasteful number, since it uses less digits than its factorization.

211443220230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576854 (or 576843 counting only the distinct ones).

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

Adding to 211443220230 its reverse (32022344112), we get a palindrome (243465564342).

The spelling of 211443220230 in words is "two hundred eleven billion, four hundred forty-three million, two hundred twenty thousand, two hundred thirty".