1200021120112 has 20 divisors (see below), whose sum is σ = 2325077792640. Its totient is φ = 600001044608.

The previous prime is 1200021120047. The next prime is 1200021120229. The reversal of 1200021120112 is 2110211200021.

It is a junction number, because it is equal to n+sod(n) for n = 1200021120092 and 1200021120101.

It is a congruent number.

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, 507633 + ... + 1630255.

It is an arithmetic number, because the mean of its divisors is an integer number (116253889632).

Almost surely, 2^{1200021120112} is an apocalyptic number.

It is an amenable number.

1200021120112 is a deficient number, since it is larger than the sum of its proper divisors (1125056672528).

1200021120112 is a wasteful number, since it uses less digits than its factorization.

1200021120112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189440 (or 1189434 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1200021120112 its reverse (2110211200021), we get a palindrome (3310232320133).

The spelling of 1200021120112 in words is "one trillion, two hundred billion, twenty-one million, one hundred twenty thousand, one hundred twelve".