317212286121 has 24 divisors (see below), whose sum is σ = 493540210176. Its totient is φ = 195755123520.

The previous prime is 317212286117. The next prime is 317212286129. The reversal of 317212286121 is 121682212713.

317212286121 is a `hidden beast` number, since 3 + 1 + 7 + 2 + 12 + 28 + 612 + 1 = 666.

It is not a de Polignac number, because 317212286121 - 2² = 317212286117 is a prime.

It is a super-2 number, since 2×317212286121² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (317212286129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24710140 + ... + 24722973.

It is an arithmetic number, because the mean of its divisors is an integer number (20564175424).

Almost surely, 2^317212286121 is an apocalyptic number.

317212286121 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

317212286121 is a deficient number, since it is larger than the sum of its proper divisors (176327924055).

317212286121 is a wasteful number, since it uses less digits than its factorization.

317212286121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49433173 (or 49433170 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

Adding to 317212286121 its reverse (121682212713), we get a palindrome (438894498834).

The spelling of 317212286121 in words is "three hundred seventeen billion, two hundred twelve million, two hundred eighty-six thousand, one hundred twenty-one".