312130011222 has 64 divisors (see below), whose sum is σ = 696184657920. Its totient is φ = 103659652800.

The previous prime is 312130011187. The next prime is 312130011239. The reversal of 312130011222 is 222110031213.

312130011222 is a `hidden beast` number, since 312 + 130 + 0 + 1 + 1 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 312130011195 and 312130011204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17702703 + ... + 17720325.

It is an arithmetic number, because the mean of its divisors is an integer number (10877885280).

Almost surely, 2^312130011222 is an apocalyptic number.

312130011222 is an abundant number, since it is smaller than the sum of its proper divisors (384054646698).

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

312130011222 is a wasteful number, since it uses less digits than its factorization.

312130011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18826 (or 18820 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 312130011222 its reverse (222110031213), we get a palindrome (534240042435).

The spelling of 312130011222 in words is "three hundred twelve billion, one hundred thirty million, eleven thousand, two hundred twenty-two".