211312123212 has 48 divisors (see below), whose sum is σ = 493871938560. Its totient is φ = 70321695552.

The previous prime is 211312123207. The next prime is 211312123223. The reversal of 211312123212 is 212321213112.

211312123212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41052823 + ... + 41057969.

It is an arithmetic number, because the mean of its divisors is an integer number (10288998720).

Almost surely, 2^211312123212 is an apocalyptic number.

It is an amenable number.

211312123212 is an abundant number, since it is smaller than the sum of its proper divisors (282559815348).

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

211312123212 is a wasteful number, since it uses less digits than its factorization.

211312123212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10110 (or 10108 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

Adding to 211312123212 its reverse (212321213112), we get a palindrome (423633336324).

The spelling of 211312123212 in words is "two hundred eleven billion, three hundred twelve million, one hundred twenty-three thousand, two hundred twelve".