2001220002012 has 96 divisors (see below), whose sum is σ = 5822822154240. Its totient is φ = 519699971520.

The previous prime is 2001220001993. The next prime is 2001220002017. The reversal of 2001220002012 is 2102000221002.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001220002017) 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 31 ways as a sum of consecutive naturals, for example, 4795789 + ... + 5196347.

It is an arithmetic number, because the mean of its divisors is an integer number (60654397440).

Almost surely, 2^{2001220002012} is an apocalyptic number.

2001220002012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2001220002012 is an abundant number, since it is smaller than the sum of its proper divisors (3821602152228).

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

2001220002012 is a wasteful number, since it uses less digits than its factorization.

2001220002012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405991 (or 405989 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 2001220002012 its reverse (2102000221002), we get a palindrome (4103220223014).

The spelling of 2001220002012 in words is "two trillion, one billion, two hundred twenty million, two thousand, twelve".