212133021312 has 64 divisors (see below), whose sum is σ = 563758120800. Its totient is φ = 70675897344.

The previous prime is 212133021241. The next prime is 212133021313. The reversal of 212133021312 is 213120331212.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (212133021313) 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 7 ways as a sum of consecutive naturals, for example, 643003 + ... + 915269.

Almost surely, 2^212133021312 is an apocalyptic number.

It is an amenable number.

212133021312 is an abundant number, since it is smaller than the sum of its proper divisors (351625099488).

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

212133021312 is a wasteful number, since it uses less digits than its factorization.

212133021312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274313 (or 274301 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 212133021312 its reverse (213120331212), we get a palindrome (425253352524).

The spelling of 212133021312 in words is "two hundred twelve billion, one hundred thirty-three million, twenty-one thousand, three hundred twelve".