2011201111220 has 96 divisors (see below), whose sum is σ = 4916947795200. Its totient is φ = 676738621440.

The previous prime is 2011201111151. The next prime is 2011201111261. The reversal of 2011201111220 is 221111021102.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 2011201111195 and 2011201111204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3572207 + ... + 4096713.

It is an arithmetic number, because the mean of its divisors is an integer number (51218206200).

Almost surely, 2^{2011201111220} is an apocalyptic number.

2011201111220 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 2011201111220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2458473897600).

2011201111220 is an abundant number, since it is smaller than the sum of its proper divisors (2905746683980).

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

2011201111220 is a wasteful number, since it uses less digits than its factorization.

2011201111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525033 (or 525031 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2011201111220 its reverse (221111021102), we get a palindrome (2232312132322).

The spelling of 2011201111220 in words is "two trillion, eleven billion, two hundred one million, one hundred eleven thousand, two hundred twenty".