312102213211212 has 24 divisors (see below), whose sum is σ = 728238794460912. Its totient is φ = 104034028646400.

The previous prime is 312102213211199. The next prime is 312102213211213. The reversal of 312102213211212 is 212112312201213.

It is not an unprimeable number, because it can be changed into a prime (312102213211213) 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, 42813012 + ... + 49569732.

It is an arithmetic number, because the mean of its divisors is an integer number (30343283102538).

Almost surely, 2^{312102213211212} is an apocalyptic number.

It is an amenable number.

312102213211212 is an abundant number, since it is smaller than the sum of its proper divisors (416136581249700).

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

312102213211212 is a wasteful number, since it uses less digits than its factorization.

312102213211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10606009 (or 10606007 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

Adding to 312102213211212 its reverse (212112312201213), we get a palindrome (524214525412425).

The spelling of 312102213211212 in words is "three hundred twelve trillion, one hundred two billion, two hundred thirteen million, two hundred eleven thousand, two hundred twelve".