312112102211 has 12 divisors (see below), whose sum is σ = 390997579392. Its totient is φ = 246945838608.

The previous prime is 312112102189. The next prime is 312112102213. The reversal of 312112102211 is 112201211213.

It is a happy number.

It is not a de Polignac number, because 312112102211 - 2⁶ = 312112102147 is a prime.

It is a super-2 number, since 2×312112102211² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 312112102211.

It is not an unprimeable number, because it can be changed into a prime (312112102213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 244985315 + ... + 244986588.

It is an arithmetic number, because the mean of its divisors is an integer number (32583131616).

Almost surely, 2^312112102211 is an apocalyptic number.

312112102211 is a deficient number, since it is larger than the sum of its proper divisors (78885477181).

312112102211 is a wasteful number, since it uses less digits than its factorization.

312112102211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489971930 (or 489971923 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 312112102211 its reverse (112201211213), we get a palindrome (424313313424).

The spelling of 312112102211 in words is "three hundred twelve billion, one hundred twelve million, one hundred two thousand, two hundred eleven".