212133311312 has 40 divisors (see below), whose sum is σ = 446685134280. Its totient is φ = 97009436160.

The previous prime is 212133311293. The next prime is 212133311317. The reversal of 212133311312 is 213113331212.

It can be written as a sum of positive squares in 4 ways, for example, as 44750863936 + 167382447376 = 211544^2 + 409124^2 .

It is a super-2 number, since 2×212133311312² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212133311317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4655639 + ... + 4700982.

It is an arithmetic number, because the mean of its divisors is an integer number (11167128357).

Almost surely, 2^212133311312 is an apocalyptic number.

It is an amenable number.

212133311312 is an abundant number, since it is smaller than the sum of its proper divisors (234551822968).

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

212133311312 is a wasteful number, since it uses less digits than its factorization.

212133311312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9356751 (or 9356745 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

Adding to 212133311312 its reverse (213113331212), we get a palindrome (425246642524).

The spelling of 212133311312 in words is "two hundred twelve billion, one hundred thirty-three million, three hundred eleven thousand, three hundred twelve".