2011201221120 has 1920 divisors, whose sum is σ = 8505337623552. Its totient is φ = 401316249600.

The previous prime is 2011201221101. The next prime is 2011201221143. The reversal of 2011201221120 is 211221021102.

It is a tau number, because it is divible by the number of its divisors (1920).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2011201221120.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 7421406585 + ... + 7421406855.

Almost surely, 2^{2011201221120} is an apocalyptic number.

2011201221120 is a gapful number since it is divisible by the number (20) 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 2011201221120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4252668811776).

2011201221120 is an abundant number, since it is smaller than the sum of its proper divisors (6494136402432).

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

2011201221120 is a wasteful number, since it uses less digits than its factorization.

2011201221120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402 (or 379 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2011201221120 its reverse (211221021102), we get a palindrome (2222422242222).

The spelling of 2011201221120 in words is "two trillion, eleven billion, two hundred one million, two hundred twenty-one thousand, one hundred twenty".