1200666600120 has 256 divisors, whose sum is σ = 3941027758080. Its totient is φ = 290863872000.

The previous prime is 1200666600079. The next prime is 1200666600127. The reversal of 1200666600120 is 210066660021.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200666600127) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26289705 + ... + 26335335.

It is an arithmetic number, because the mean of its divisors is an integer number (15394639680).

Almost surely, 2^{1200666600120} is an apocalyptic number.

1200666600120 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 1200666600120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1970513879040).

1200666600120 is an abundant number, since it is smaller than the sum of its proper divisors (2740361157960).

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

1200666600120 is a wasteful number, since it uses less digits than its factorization.

1200666600120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45926 (or 45922 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The spelling of 1200666600120 in words is "one trillion, two hundred billion, six hundred sixty-six million, six hundred thousand, one hundred twenty".