1200112020000 has 720 divisors, whose sum is σ = 4400798193792. Its totient is φ = 309899520000.

The previous prime is 1200112019891. The next prime is 1200112020011. The reversal of 1200112020000 is 202110021.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 2444219755 + ... + 2444220245.

Almost surely, 2^{1200112020000} is an apocalyptic number.

1200112020000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200112020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2200399096896).

1200112020000 is an abundant number, since it is smaller than the sum of its proper divisors (3200686173792).

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

1200112020000 is a wasteful number, since it uses less digits than its factorization.

1200112020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931 (or 905 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1200112020000 its reverse (202110021), we get a palindrome (1200314130021).

The spelling of 1200112020000 in words is "one trillion, two hundred billion, one hundred twelve million, twenty thousand".