321212223222 has 32 divisors (see below), whose sum is σ = 707630826240. Its totient is φ = 96392015520.

The previous prime is 321212223161. The next prime is 321212223247. The reversal of 321212223222 is 222322212123.

It is a super-2 number, since 2×321212223222² (a number of 24 digits) contains 22 as substring.

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 = 321212223192 and 321212223201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23618697 + ... + 23632292.

It is an arithmetic number, because the mean of its divisors is an integer number (22113463320).

Almost surely, 2^321212223222 is an apocalyptic number.

321212223222 is an abundant number, since it is smaller than the sum of its proper divisors (386418603018).

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

321212223222 is a wasteful number, since it uses less digits than its factorization.

321212223222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47251108.

The product of its digits is 2304, while the sum is 24.

Adding to 321212223222 its reverse (222322212123), we get a palindrome (543534435345).

The spelling of 321212223222 in words is "three hundred twenty-one billion, two hundred twelve million, two hundred twenty-three thousand, two hundred twenty-two".