2112223212 has 36 divisors (see below), whose sum is σ = 5824616616. Its totient is φ = 640067520.

The previous prime is 2112223177. The next prime is 2112223231. The reversal of 2112223212 is 2123222112.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×2112223212² = 8922973794623193888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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

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 11 ways as a sum of consecutive naturals, for example, 2666553 + ... + 2667344.

It is an arithmetic number, because the mean of its divisors is an integer number (161794906).

Almost surely, 2^2112223212 is an apocalyptic number.

2112223212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2112223212 is an abundant number, since it is smaller than the sum of its proper divisors (3712393404).

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

2112223212 is a wasteful number, since it uses less digits than its factorization.

2112223212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5333918 (or 5333913 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 2112223212 is about 45958.9296220006. The cubic root of 2112223212 is about 1283.0589299107.

Adding to 2112223212 its reverse (2123222112), we get a palindrome (4235445324).

The spelling of 2112223212 in words is "two billion, one hundred twelve million, two hundred twenty-three thousand, two hundred twelve".