2012001220 has 12 divisors (see below), whose sum is σ = 4225202604. Its totient is φ = 804800480.

The previous prime is 2012001217. The next prime is 2012001227. The reversal of 2012001220 is 221002102.

2012001220 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 876041604 + 1135959616 = 29598^2 + 33704^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 2012001197 and 2012001206.

It is not an unprimeable number, because it can be changed into a prime (2012001227) by changing a digit.

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, 50300011 + ... + 50300050.

It is an arithmetic number, because the mean of its divisors is an integer number (352100217).

Almost surely, 2^2012001220 is an apocalyptic number.

2012001220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012001220 is an abundant number, since it is smaller than the sum of its proper divisors (2213201384).

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

2012001220 is a wasteful number, since it uses less digits than its factorization.

2012001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100600070 (or 100600068 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2012001220 is about 44855.3365832874. The cubic root of 2012001220 is about 1262.4361242068.

Adding to 2012001220 its reverse (221002102), we get a palindrome (2233003322).

The spelling of 2012001220 in words is "two billion, twelve million, one thousand, two hundred twenty".