212231232330 has 128 divisors (see below), whose sum is σ = 563054962176. Its totient is φ = 50875776000.

The previous prime is 212231232313. The next prime is 212231232337. The reversal of 212231232330 is 33232132212.

It is a zygodrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 212231232330.

It is not an unprimeable number, because it can be changed into a prime (212231232337) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2358627 + ... + 2446953.

It is an arithmetic number, because the mean of its divisors is an integer number (4398866892).

Almost surely, 2^212231232330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212231232330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281527481088).

212231232330 is an abundant number, since it is smaller than the sum of its proper divisors (350823729846).

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

212231232330 is a wasteful number, since it uses less digits than its factorization.

212231232330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88512.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 212231232330 its reverse (33232132212), we get a palindrome (245463364542).

The spelling of 212231232330 in words is "two hundred twelve billion, two hundred thirty-one million, two hundred thirty-two thousand, three hundred thirty".