212222430342 has 96 divisors (see below), whose sum is σ = 497461910400. Its totient is φ = 64999673856.

The previous prime is 212222430311. The next prime is 212222430349. The reversal of 212222430342 is 243034222212.

212222430342 is a `hidden beast` number, since 2 + 1 + 2 + 222 + 430 + 3 + 4 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212222430349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68040259 + ... + 68043377.

It is an arithmetic number, because the mean of its divisors is an integer number (5181894900).

Almost surely, 2^212222430342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212222430342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248730955200).

212222430342 is an abundant number, since it is smaller than the sum of its proper divisors (285239480058).

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

212222430342 is a wasteful number, since it uses less digits than its factorization.

212222430342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4382 (or 4379 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 212222430342 its reverse (243034222212), we get a palindrome (455256652554).

The spelling of 212222430342 in words is "two hundred twelve billion, two hundred twenty-two million, four hundred thirty thousand, three hundred forty-two".