212121202222 has 8 divisors (see below), whose sum is σ = 318920045472. Its totient is φ = 105814520400.

The previous prime is 212121202193. The next prime is 212121202297. The reversal of 212121202222 is 222202121212.

212121202222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 212121202222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123039279 + ... + 123041002.

It is an arithmetic number, because the mean of its divisors is an integer number (39865005684).

Almost surely, 2^212121202222 is an apocalyptic number.

212121202222 is a deficient number, since it is larger than the sum of its proper divisors (106798843250).

212121202222 is a wasteful number, since it uses less digits than its factorization.

212121202222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246080714.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 212121202222 its reverse (222202121212), we get a palindrome (434323323434).

The spelling of 212121202222 in words is "two hundred twelve billion, one hundred twenty-one million, two hundred two thousand, two hundred twenty-two".