312242242212 has 18 divisors (see below), whose sum is σ = 789279001238. Its totient is φ = 104080747392.

The previous prime is 312242242211. The next prime is 312242242217. The reversal of 312242242212 is 212242242213.

312242242212 is a `hidden beast` number, since 3 + 1 + 22 + 422 + 4 + 2 + 212 = 666.

312242242212 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 272427626916 + 39814615296 = 521946^2 + 199536^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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

It is not an unprimeable number, because it can be changed into a prime (312242242211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4336697773 + ... + 4336697844.

Almost surely, 2^312242242212 is an apocalyptic number.

It is an amenable number.

312242242212 is an abundant number, since it is smaller than the sum of its proper divisors (477036759026).

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

312242242212 is a wasteful number, since it uses less digits than its factorization.

312242242212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8673395627 (or 8673395622 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

Adding to 312242242212 its reverse (212242242213), we get a palindrome (524484484425).

Subtracting from 312242242212 its reverse (212242242213), we obtain a palindrome (99999999999).

The spelling of 312242242212 in words is "three hundred twelve billion, two hundred forty-two million, two hundred forty-two thousand, two hundred twelve".