312221340130212 has 60 divisors (see below), whose sum is σ = 818481817359360. Its totient is φ = 103783880895984.

The previous prime is 312221340130163. The next prime is 312221340130247. The reversal of 312221340130212 is 212031043122213.

312221340130212 is a `hidden beast` number, since 3 + 1 + 2 + 2 + 2 + 1 + 340 + 1 + 302 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1342009188 + ... + 1342241819.

It is an arithmetic number, because the mean of its divisors is an integer number (13641363622656).

Almost surely, 2^{312221340130212} is an apocalyptic number.

It is an amenable number.

312221340130212 is an abundant number, since it is smaller than the sum of its proper divisors (506260477229148).

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

312221340130212 is a wasteful number, since it uses less digits than its factorization.

312221340130212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2684251382 (or 2684251371 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 312221340130212 its reverse (212031043122213), we get a palindrome (524252383252425).

The spelling of 312221340130212 in words is "three hundred twelve trillion, two hundred twenty-one billion, three hundred forty million, one hundred thirty thousand, two hundred twelve".