2222112120312 has 64 divisors (see below), whose sum is σ = 6350081713920. Its totient is φ = 634770183168.

The previous prime is 2222112120311. The next prime is 2222112120323. The reversal of 2222112120312 is 2130212112222.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222112120311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 338553 + ... + 2135144.

It is an arithmetic number, because the mean of its divisors is an integer number (99220026780).

Almost surely, 2^{2222112120312} is an apocalyptic number.

It is an amenable number.

2222112120312 is an abundant number, since it is smaller than the sum of its proper divisors (4127969593608).

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

2222112120312 is a wasteful number, since it uses less digits than its factorization.

2222112120312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2479060 (or 2479056 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 2222112120312 its reverse (2130212112222), we get a palindrome (4352324232534).

The spelling of 2222112120312 in words is "two trillion, two hundred twenty-two billion, one hundred twelve million, one hundred twenty thousand, three hundred twelve".