2011120220 has 12 divisors (see below), whose sum is σ = 4223352504. Its totient is φ = 804448080.

The previous prime is 2011120219. The next prime is 2011120261. The reversal of 2011120220 is 220211102.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 50277986 + ... + 50278025.

It is an arithmetic number, because the mean of its divisors is an integer number (351946042).

Almost surely, 2^2011120220 is an apocalyptic number.

2011120220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011120220 is an abundant number, since it is smaller than the sum of its proper divisors (2212232284).

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

2011120220 is a wasteful number, since it uses less digits than its factorization.

2011120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100556020 (or 100556018 counting only the distinct ones).

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

The square root of 2011120220 is about 44845.5150488876. The cubic root of 2011120220 is about 1262.2518352861.

Adding to 2011120220 its reverse (220211102), we get a palindrome (2231331322).

The spelling of 2011120220 in words is "two billion, eleven million, one hundred twenty thousand, two hundred twenty".