212142243222 has 96 divisors (see below), whose sum is σ = 567712873728. Its totient is φ = 55751779008.

The previous prime is 212142243197. The next prime is 212142243223. The reversal of 212142243222 is 222342241212.

212142243222 is a `hidden beast` number, since 2 + 1 + 214 + 224 + 3 + 222 = 666.

212142243222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212142243223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 234733 + ... + 692375.

It is an arithmetic number, because the mean of its divisors is an integer number (5913675768).

Almost surely, 2^212142243222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212142243222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283856436864).

212142243222 is an abundant number, since it is smaller than the sum of its proper divisors (355570630506).

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

212142243222 is a wasteful number, since it uses less digits than its factorization.

212142243222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457954 (or 457951 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

Adding to 212142243222 its reverse (222342241212), we get a palindrome (434484484434).

The spelling of 212142243222 in words is "two hundred twelve billion, one hundred forty-two million, two hundred forty-three thousand, two hundred twenty-two".