1001201121200 has 240 divisors, whose sum is σ = 2943435983040. Its totient is φ = 319445237760.

The previous prime is 1001201121143. The next prime is 1001201121203. The reversal of 1001201121200 is 21211021001.

It is not an unprimeable number, because it can be changed into a prime (1001201121203) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4118234 + ... + 4354566.

It is an arithmetic number, because the mean of its divisors is an integer number (12264316596).

Almost surely, 2^{1001201121200} is an apocalyptic number.

1001201121200 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 1001201121200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1471717991520).

1001201121200 is an abundant number, since it is smaller than the sum of its proper divisors (1942234861840).

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

1001201121200 is a wasteful number, since it uses less digits than its factorization.

1001201121200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236464 (or 236453 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1001201121200 its reverse (21211021001), we get a palindrome (1022412142201).

The spelling of 1001201121200 in words is "one trillion, one billion, two hundred one million, one hundred twenty-one thousand, two hundred".