12212322222 has 64 divisors (see below), whose sum is σ = 25377338880. Its totient is φ = 3915609984.

The previous prime is 12212322217. The next prime is 12212322223. The reversal of 12212322222 is 22222321221.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212322223) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 4877823 + ... + 4880325.

It is an arithmetic number, because the mean of its divisors is an integer number (396520920).

Almost surely, 2^12212322222 is an apocalyptic number.

12212322222 is an abundant number, since it is smaller than the sum of its proper divisors (13165016658).

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

12212322222 is a wasteful number, since it uses less digits than its factorization.

12212322222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857.

The product of its digits is 768, while the sum is 21.

Adding to 12212322222 its reverse (22222321221), we get a palindrome (34434643443).

The spelling of 12212322222 in words is "twelve billion, two hundred twelve million, three hundred twenty-two thousand, two hundred twenty-two".