212021212222 has 8 divisors (see below), whose sum is σ = 318061946736. Its totient is φ = 106000563312.

The previous prime is 212021212201. The next prime is 212021212229. The reversal of 212021212222 is 222212120212.

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 212021212222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021212229) 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, 4994983 + ... + 5037250.

It is an arithmetic number, because the mean of its divisors is an integer number (39757743342).

Almost surely, 2^212021212222 is an apocalyptic number.

212021212222 is a deficient number, since it is larger than the sum of its proper divisors (106040734514).

212021212222 is a wasteful number, since it uses less digits than its factorization.

212021212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10042802.

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

Adding to 212021212222 its reverse (222212120212), we get a palindrome (434233332434).

The spelling of 212021212222 in words is "two hundred twelve billion, twenty-one million, two hundred twelve thousand, two hundred twenty-two".