211203311312 has 40 divisors (see below), whose sum is σ = 470803200000. Its totient is φ = 89908209792.

The previous prime is 211203311303. The next prime is 211203311317. The reversal of 211203311312 is 213113302112.

It is a happy number.

211203311312 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×211203311312³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211203311317) 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, 6311312 + ... + 6344687.

It is an arithmetic number, because the mean of its divisors is an integer number (11770080000).

Almost surely, 2^211203311312 is an apocalyptic number.

It is an amenable number.

211203311312 is an abundant number, since it is smaller than the sum of its proper divisors (259599888688).

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

211203311312 is a wasteful number, since it uses less digits than its factorization.

211203311312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12656163 (or 12656157 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 211203311312 its reverse (213113302112), we get a palindrome (424316613424).

The spelling of 211203311312 in words is "two hundred eleven billion, two hundred three million, three hundred eleven thousand, three hundred twelve".