1200112121012 has 12 divisors (see below), whose sum is σ = 2400224242080. Its totient is φ = 514333766136.

The previous prime is 1200112120997. The next prime is 1200112121071. The reversal of 1200112121012 is 2101212110021.

1200112121012 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (14).

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, 21430573562 + ... + 21430573617.

It is an arithmetic number, because the mean of its divisors is an integer number (200018686840).

Almost surely, 2^{1200112121012} is an apocalyptic number.

It is an amenable number.

1200112121012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1200112121012 is a wasteful number, since it uses less digits than its factorization.

1200112121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42861147190 (or 42861147188 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1200112121012 its reverse (2101212110021), we get a palindrome (3301324231033).

The spelling of 1200112121012 in words is "one trillion, two hundred billion, one hundred twelve million, one hundred twenty-one thousand, twelve".