212210021222 has 8 divisors (see below), whose sum is σ = 318321406200. Its totient is φ = 106102885824.

The previous prime is 212210021161. The next prime is 212210021281. The reversal of 212210021222 is 222120012212.

It is a happy number.

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 212210021222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 934472 + ... + 1139147.

It is an arithmetic number, because the mean of its divisors is an integer number (39790175775).

Almost surely, 2^212210021222 is an apocalyptic number.

212210021222 is a deficient number, since it is larger than the sum of its proper divisors (106111384978).

212210021222 is a wasteful number, since it uses less digits than its factorization.

212210021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124790.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 212210021222 its reverse (222120012212), we get a palindrome (434330033434).

The spelling of 212210021222 in words is "two hundred twelve billion, two hundred ten million, twenty-one thousand, two hundred twenty-two".