212321331222 has 96 divisors (see below), whose sum is σ = 573282489600. Its totient is φ = 50906194560.

The previous prime is 212321331217. The next prime is 212321331253. The reversal of 212321331222 is 222133123212.

212321331222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 212321331192 and 212321331201.

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 47 ways as a sum of consecutive naturals, for example, 1281597 + ... + 1437752.

It is an arithmetic number, because the mean of its divisors is an integer number (5971692600).

Almost surely, 2^212321331222 is an apocalyptic number.

212321331222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212321331222 is an abundant number, since it is smaller than the sum of its proper divisors (360961158378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212321331222 is a wasteful number, since it uses less digits than its factorization.

212321331222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2719398 (or 2719385 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

Adding to 212321331222 its reverse (222133123212), we get a palindrome (434454454434).

The spelling of 212321331222 in words is "two hundred twelve billion, three hundred twenty-one million, three hundred thirty-one thousand, two hundred twenty-two".