312102120212 has 12 divisors (see below), whose sum is σ = 546714712320. Its totient is φ = 155897916696.

The previous prime is 312102120173. The next prime is 312102120217. The reversal of 312102120212 is 212021201213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312102120217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38281268 + ... + 38289419.

It is an arithmetic number, because the mean of its divisors is an integer number (45559559360).

Almost surely, 2^312102120212 is an apocalyptic number.

It is an amenable number.

312102120212 is a deficient number, since it is larger than the sum of its proper divisors (234612592108).

312102120212 is a wasteful number, since it uses less digits than its factorization.

312102120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76571710 (or 76571708 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 312102120212 its reverse (212021201213), we get a palindrome (524123321425).

The spelling of 312102120212 in words is "three hundred twelve billion, one hundred two million, one hundred twenty thousand, two hundred twelve".