312313220211212 has 48 divisors (see below), whose sum is σ = 605199702928128. Its totient is φ = 139826406582720.

The previous prime is 312313220211101. The next prime is 312313220211217. The reversal of 312313220211212 is 212112022313213.

It is not an unprimeable number, because it can be changed into a prime (312313220211217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21102698 + ... + 32710094.

It is an arithmetic number, because the mean of its divisors is an integer number (12608327144336).

Almost surely, 2^{312313220211212} is an apocalyptic number.

It is an amenable number.

312313220211212 is a deficient number, since it is larger than the sum of its proper divisors (292886482716916).

312313220211212 is a wasteful number, since it uses less digits than its factorization.

312313220211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11616606 (or 11616604 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 312313220211212 its reverse (212112022313213), we get a palindrome (524425242524425).

The spelling of 312313220211212 in words is "three hundred twelve trillion, three hundred thirteen billion, two hundred twenty million, two hundred eleven thousand, two hundred twelve".