1200201020120 has 64 divisors (see below), whose sum is σ = 2740719421440. Its totient is φ = 472932835200.

The previous prime is 1200201020101. The next prime is 1200201020129. The reversal of 1200201020120 is 210201020021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200201020129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3324389 + ... + 3667691.

It is an arithmetic number, because the mean of its divisors is an integer number (42823740960).

Almost surely, 2^{1200201020120} is an apocalyptic number.

1200201020120 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 1200201020120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1370359710720).

1200201020120 is an abundant number, since it is smaller than the sum of its proper divisors (1540518401320).

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

1200201020120 is a wasteful number, since it uses less digits than its factorization.

1200201020120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344616 (or 344612 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1200201020120 its reverse (210201020021), we get a palindrome (1410402040141).

Subtracting from 1200201020120 its reverse (210201020021), we obtain a palindrome (990000000099).

The spelling of 1200201020120 in words is "one trillion, two hundred billion, two hundred one million, twenty thousand, one hundred twenty".