1200120120012 has 96 divisors (see below), whose sum is σ = 3119305561344. Its totient is φ = 356072371200.

The previous prime is 1200120120007. The next prime is 1200120120037. The reversal of 1200120120012 is 2100210210021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1200120120012.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 865587 + ... + 1774677.

It is an arithmetic number, because the mean of its divisors is an integer number (32492766264).

Almost surely, 2^{1200120120012} is an apocalyptic number.

1200120120012 is a gapful number since it is divisible by the number (12) 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 1200120120012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1559652780672).

1200120120012 is an abundant number, since it is smaller than the sum of its proper divisors (1919185441332).

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

1200120120012 is a wasteful number, since it uses less digits than its factorization.

1200120120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909319 (or 909317 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

1200120120012 divided by its sum of digits (12) gives a palindrome (100010010001).

Adding to 1200120120012 its reverse (2100210210021), we get a palindrome (3300330330033).

Subtracting 1200120120012 from its reverse (2100210210021), we obtain a palindrome (900090090009).

The spelling of 1200120120012 in words is "one trillion, two hundred billion, one hundred twenty million, one hundred twenty thousand, twelve".