312232221100012 has 24 divisors (see below), whose sum is σ = 555668632753920. Its totient is φ = 153469765271760.

The previous prime is 312232221100001. The next prime is 312232221100039. The reversal of 312232221100012 is 210001122232213.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154341337 + ... + 156351247.

It is an arithmetic number, because the mean of its divisors is an integer number (23152859698080).

Almost surely, 2^{312232221100012} is an apocalyptic number.

It is an amenable number.

312232221100012 is a deficient number, since it is larger than the sum of its proper divisors (243436411653908).

312232221100012 is a wasteful number, since it uses less digits than its factorization.

312232221100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2668221 (or 2668219 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 312232221100012 its reverse (210001122232213), we get a palindrome (522233343332225).

The spelling of 312232221100012 in words is "three hundred twelve trillion, two hundred thirty-two billion, two hundred twenty-one million, one hundred thousand, twelve".