2002001220001 has 8 divisors (see below), whose sum is σ = 2059877403584. Its totient is φ = 1944639491760.

The previous prime is 2002001219989. The next prime is 2002001220019. The reversal of 2002001220001 is 1000221002002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2002001220001 - 2³⁷ = 1864562266529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2002001220001.

It is not an unprimeable number, because it can be changed into a prime (2002001221001) 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, 128605941 + ... + 128621506.

It is an arithmetic number, because the mean of its divisors is an integer number (257484675448).

Almost surely, 2^{2002001220001} is an apocalyptic number.

It is an amenable number.

2002001220001 is a deficient number, since it is larger than the sum of its proper divisors (57876183583).

2002001220001 is a wasteful number, since it uses less digits than its factorization.

2002001220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257227671.

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

Adding to 2002001220001 its reverse (1000221002002), we get a palindrome (3002222222003).

The spelling of 2002001220001 in words is "two trillion, two billion, one million, two hundred twenty thousand, one".