2112123212 has 24 divisors (see below), whose sum is σ = 3859754976. Its totient is φ = 1009403648.

The previous prime is 2112123203. The next prime is 2112123227. The reversal of 2112123212 is 2123212112.

It is a super-2 number, since 2×2112123212² = 8922128925338393888, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129668 + ... + 145044.

It is an arithmetic number, because the mean of its divisors is an integer number (160823124).

Almost surely, 2^2112123212 is an apocalyptic number.

It is an amenable number.

2112123212 is a deficient number, since it is larger than the sum of its proper divisors (1747631764).

2112123212 is a wasteful number, since it uses less digits than its factorization.

2112123212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16897 (or 16895 counting only the distinct ones).

The product of its digits is 96, while the sum is 17.

The square root of 2112123212 is about 45957.8416812626. The cubic root of 2112123212 is about 1283.0386814323.

Adding to 2112123212 its reverse (2123212112), we get a palindrome (4235335324).

Subtracting 2112123212 from its reverse (2123212112), we obtain a square (11088900 = 3330²).

The spelling of 2112123212 in words is "two billion, one hundred twelve million, one hundred twenty-three thousand, two hundred twelve".