1213312222112 has 24 divisors (see below), whose sum is σ = 2388885359616. Its totient is φ = 606611178432.

The previous prime is 1213312222093. The next prime is 1213312222121. The reversal of 1213312222112 is 2112222133121.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 963218 + ... + 1831505.

It is an arithmetic number, because the mean of its divisors is an integer number (99536889984).

Almost surely, 2^{1213312222112} is an apocalyptic number.

It is an amenable number.

1213312222112 is a deficient number, since it is larger than the sum of its proper divisors (1175573137504).

1213312222112 is a wasteful number, since it uses less digits than its factorization.

1213312222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2808300 (or 2808292 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

Adding to 1213312222112 its reverse (2112222133121), we get a palindrome (3325534355233).

The spelling of 1213312222112 in words is "one trillion, two hundred thirteen billion, three hundred twelve million, two hundred twenty-two thousand, one hundred twelve".