212212222212 has 24 divisors (see below), whose sum is σ = 498024063936. Its totient is φ = 70328519968.

The previous prime is 212212222193. The next prime is 212212222217. The reversal of 212212222212 is 212222212212.

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 (212212222217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51108768 + ... + 51112919.

It is an arithmetic number, because the mean of its divisors is an integer number (20751002664).

Almost surely, 2^212212222212 is an apocalyptic number.

It is an amenable number.

212212222212 is an abundant number, since it is smaller than the sum of its proper divisors (285811841724).

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

212212222212 is a wasteful number, since it uses less digits than its factorization.

212212222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102221867 (or 102221865 counting only the distinct ones).

The product of its digits is 512, while the sum is 21.

Adding to 212212222212 its reverse (212222212212), we get a palindrome (424434434424).

The spelling of 212212222212 in words is "two hundred twelve billion, two hundred twelve million, two hundred twenty-two thousand, two hundred twelve".