212312012 has 24 divisors (see below), whose sum is σ = 411378240. Its totient is φ = 95063760.

The previous prime is 212312003. The next prime is 212312017. The reversal of 212312012 is 210213212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (212312017) by changing a digit.

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, 33062 + ... + 38957.

It is an arithmetic number, because the mean of its divisors is an integer number (17140760).

Almost surely, 2^212312012 is an apocalyptic number.

212312012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212312012 is a deficient number, since it is larger than the sum of its proper divisors (199066228).

212312012 is a wasteful number, since it uses less digits than its factorization.

212312012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72101 (or 72099 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 212312012 is about 14570.9303752369. The cubic root of 212312012 is about 596.5655750139.

Adding to 212312012 its reverse (210213212), we get a palindrome (422525224).

The spelling of 212312012 in words is "two hundred twelve million, three hundred twelve thousand, twelve".