1212012222112 has 48 divisors (see below), whose sum is σ = 2393236782720. Its totient is φ = 604208740608.

The previous prime is 1212012222077. The next prime is 1212012222163. The reversal of 1212012222112 is 2112222102121.

It is a self number, because there is not a number n which added to its sum of digits gives 1212012222112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14637853 + ... + 14720419.

It is an arithmetic number, because the mean of its divisors is an integer number (49859099640).

Almost surely, 2^{1212012222112} is an apocalyptic number.

It is an amenable number.

1212012222112 is a deficient number, since it is larger than the sum of its proper divisors (1181224560608).

1212012222112 is an equidigital number, since it uses as much as digits as its factorization.

1212012222112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83933 (or 83925 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1212012222112 its reverse (2112222102121), we get a palindrome (3324234324233).

The spelling of 1212012222112 in words is "one trillion, two hundred twelve billion, twelve million, two hundred twenty-two thousand, one hundred twelve".