212143204432 has 20 divisors (see below), whose sum is σ = 428898218400. Its totient is φ = 101459793248.

The previous prime is 212143204423. The next prime is 212143204433. The reversal of 212143204432 is 234402341212.

It is a self number, because there is not a number n which added to its sum of digits gives 212143204432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212143204433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288237682 + ... + 288238417.

It is an arithmetic number, because the mean of its divisors is an integer number (21444910920).

Almost surely, 2^212143204432 is an apocalyptic number.

It is an amenable number.

212143204432 is an abundant number, since it is smaller than the sum of its proper divisors (216755013968).

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

212143204432 is a wasteful number, since it uses less digits than its factorization.

212143204432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576476130 (or 576476124 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 212143204432 its reverse (234402341212), we get a palindrome (446545545644).

The spelling of 212143204432 in words is "two hundred twelve billion, one hundred forty-three million, two hundred four thousand, four hundred thirty-two".