212311223133312 has 32 divisors (see below), whose sum is σ = 563951686448880. Its totient is φ = 70770407710976.

The previous prime is 212311223133281. The next prime is 212311223133329. The reversal of 212311223133312 is 213331322113212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-4 number, since 4×212311223133312⁴ (a number of 58 digits) contains 4444 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 212311223133312.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276446904738 + ... + 276446905505.

Almost surely, 2^{212311223133312} is an apocalyptic number.

It is an amenable number.

212311223133312 is an abundant number, since it is smaller than the sum of its proper divisors (351640463315568).

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

212311223133312 is an equidigital number, since it uses as much as digits as its factorization.

212311223133312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552893810260 (or 552893810248 counting only the distinct ones).

The product of its digits is 7776, while the sum is 30.

Adding to 212311223133312 its reverse (213331322113212), we get a palindrome (425642545246524).

The spelling of 212311223133312 in words is "two hundred twelve trillion, three hundred eleven billion, two hundred twenty-three million, one hundred thirty-three thousand, three hundred twelve".