212221021222 has 16 divisors (see below), whose sum is σ = 363817649952. Its totient is φ = 90949320000.

The previous prime is 212221021153. The next prime is 212221021283. The reversal of 212221021222 is 222120122212.

212221021222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×212221021222³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212221021222.

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 7 ways as a sum of consecutive naturals, for example, 358722 + ... + 743722.

It is an arithmetic number, because the mean of its divisors is an integer number (22738603122).

Almost surely, 2^212221021222 is an apocalyptic number.

212221021222 is a deficient number, since it is larger than the sum of its proper divisors (151596628730).

212221021222 is a wasteful number, since it uses less digits than its factorization.

212221021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424383.

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

Adding to 212221021222 its reverse (222120122212), we get a palindrome (434341143434).

The spelling of 212221021222 in words is "two hundred twelve billion, two hundred twenty-one million, twenty-one thousand, two hundred twenty-two".