1200212120112 has 40 divisors (see below), whose sum is σ = 3128993384880. Its totient is φ = 396400331520.

The previous prime is 1200212120057. The next prime is 1200212120119. The reversal of 1200212120112 is 2110212120021.

It is a junction number, because it is equal to n+sod(n) for n = 1200212120091 and 1200212120100.

It is not an unprimeable number, because it can be changed into a prime (1200212120119) 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 7 ways as a sum of consecutive naturals, for example, 114693939 + ... + 114704402.

It is an arithmetic number, because the mean of its divisors is an integer number (78224834622).

Almost surely, 2^{1200212120112} is an apocalyptic number.

1200212120112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1200212120112 is an abundant number, since it is smaller than the sum of its proper divisors (1928781264768).

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

1200212120112 is a wasteful number, since it uses less digits than its factorization.

1200212120112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229398461 (or 229398455 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1200212120112 its reverse (2110212120021), we get a palindrome (3310424240133).

Subtracting 1200212120112 from its reverse (2110212120021), we obtain a palindrome (909999999909).

The spelling of 1200212120112 in words is "one trillion, two hundred billion, two hundred twelve million, one hundred twenty thousand, one hundred twelve".