312312101213212 has 12 divisors (see below), whose sum is σ = 555505950519016. Its totient is φ = 153596115350640.

The previous prime is 312312101213159. The next prime is 312312101213269. The reversal of 312312101213212 is 212312101213213.

It is a congruent number.

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, 639983813718 + ... + 639983814205.

Almost surely, 2^{312312101213212} is an apocalyptic number.

It is an amenable number.

312312101213212 is a deficient number, since it is larger than the sum of its proper divisors (243193849305804).

312312101213212 is a wasteful number, since it uses less digits than its factorization.

312312101213212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279967627988 (or 1279967627986 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 312312101213212 its reverse (212312101213213), we get a palindrome (524624202426425).

Subtracting from 312312101213212 its reverse (212312101213213), we obtain a palindrome (99999999999999).

The spelling of 312312101213212 in words is "three hundred twelve trillion, three hundred twelve billion, one hundred one million, two hundred thirteen thousand, two hundred twelve".