2001220012 has 24 divisors (see below), whose sum is σ = 3821694912. Its totient is φ = 909363600.

The previous prime is 2001220007. The next prime is 2001220019. The reversal of 2001220012 is 2100221002.

It is not an unprimeable number, because it can be changed into a prime (2001220019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215587 + ... + 224677.

It is an arithmetic number, because the mean of its divisors is an integer number (159237288).

Almost surely, 2^2001220012 is an apocalyptic number.

2001220012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2001220012 is a deficient number, since it is larger than the sum of its proper divisors (1820474900).

2001220012 is a wasteful number, since it uses less digits than its factorization.

2001220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14109 (or 14107 counting only the distinct ones).

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

The square root of 2001220012 is about 44734.9976193137. The cubic root of 2001220012 is about 1260.1771842874.

Adding to 2001220012 its reverse (2100221002), we get a palindrome (4101441014).

The spelling of 2001220012 in words is "two billion, one million, two hundred twenty thousand, twelve".