2011301220 has 48 divisors (see below), whose sum is σ = 5634720000. Its totient is φ = 536054016.

The previous prime is 2011301219. The next prime is 2011301231. The reversal of 2011301220 is 221031102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2011301196 and 2011301205.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115656 + ... + 131904.

It is an arithmetic number, because the mean of its divisors is an integer number (117390000).

Almost surely, 2^2011301220 is an apocalyptic number.

2011301220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011301220 is an abundant number, since it is smaller than the sum of its proper divisors (3623418780).

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

2011301220 is a wasteful number, since it uses less digits than its factorization.

2011301220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18324 (or 18322 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2011301220 is about 44847.5330425209. The cubic root of 2011301220 is about 1262.2897015337.

Adding to 2011301220 its reverse (221031102), we get a palindrome (2232332322).

The spelling of 2011301220 in words is "two billion, eleven million, three hundred one thousand, two hundred twenty".