2001220012005 has 16 divisors (see below), whose sum is σ = 3201979709760. Its totient is φ = 1067308109568.

The previous prime is 2001220011983. The next prime is 2001220012013. The reversal of 2001220012005 is 5002100221002.

It is not a de Polignac number, because 2001220012005 - 2⁶ = 2001220011941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 15 ways as a sum of consecutive naturals, for example, 1443741 + ... + 2467149.

It is an arithmetic number, because the mean of its divisors is an integer number (200123731860).

Almost surely, 2^{2001220012005} is an apocalyptic number.

It is an amenable number.

2001220012005 is a deficient number, since it is larger than the sum of its proper divisors (1200759697755).

2001220012005 is a wasteful number, since it uses less digits than its factorization.

2001220012005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153780.

The product of its (nonzero) digits is 80, while the sum is 15.

Adding to 2001220012005 its reverse (5002100221002), we get a palindrome (7003320233007).

The spelling of 2001220012005 in words is "two trillion, one billion, two hundred twenty million, twelve thousand, five".