212330112 has 128 divisors (see below), whose sum is σ = 609552000. Its totient is φ = 65286144.

The previous prime is 212330101. The next prime is 212330113. The reversal of 212330112 is 211033212.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 212330091 and 212330100.

It is not an unprimeable number, because it can be changed into a prime (212330113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255714 + ... + 256542.

It is an arithmetic number, because the mean of its divisors is an integer number (4762125).

Almost surely, 2^212330112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212330112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304776000).

212330112 is an abundant number, since it is smaller than the sum of its proper divisors (397221888).

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

212330112 is a wasteful number, since it uses less digits than its factorization.

212330112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898 (or 886 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 212330112 is about 14571.5514616667. The cubic root of 212330112 is about 596.5825273128.

Adding to 212330112 its reverse (211033212), we get a palindrome (423363324).

The spelling of 212330112 in words is "two hundred twelve million, three hundred thirty thousand, one hundred twelve".