212242222 has 8 divisors (see below), whose sum is σ = 319217976. Its totient is φ = 105836232.

The previous prime is 212242211. The next prime is 212242223. The reversal of 212242222 is 222242212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 212242222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212242223) 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, 141508 + ... + 142999.

It is an arithmetic number, because the mean of its divisors is an integer number (39902247).

Almost surely, 2^212242222 is an apocalyptic number.

212242222 is a deficient number, since it is larger than the sum of its proper divisors (106975754).

212242222 is a wasteful number, since it uses less digits than its factorization.

212242222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284882.

The product of its digits is 512, while the sum is 19.

The square root of 212242222 is about 14568.5353416189. The cubic root of 212242222 is about 596.5002012999.

Adding to 212242222 its reverse (222242212), we get a palindrome (434484434).

It can be divided in two parts, 2122 and 42222, that added together give a palindrome (44344).

The spelling of 212242222 in words is "two hundred twelve million, two hundred forty-two thousand, two hundred twenty-two".