222123223212 has 48 divisors (see below), whose sum is σ = 589987383552. Its totient is φ = 64383542080.

The previous prime is 222123223193. The next prime is 222123223219. The reversal of 222123223212 is 212322321222.

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

It is not an unprimeable number, because it can be changed into a prime (222123223219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36578523 + ... + 36584594.

It is an arithmetic number, because the mean of its divisors is an integer number (12291403824).

Almost surely, 2^222123223212 is an apocalyptic number.

222123223212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

222123223212 is an abundant number, since it is smaller than the sum of its proper divisors (367864160340).

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

222123223212 is a wasteful number, since it uses less digits than its factorization.

222123223212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73163158 (or 73163156 counting only the distinct ones).

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

Adding to 222123223212 its reverse (212322321222), we get a palindrome (434445544434).

The spelling of 222123223212 in words is "two hundred twenty-two billion, one hundred twenty-three million, two hundred twenty-three thousand, two hundred twelve".