2002000020001 has 8 divisors (see below), whose sum is σ = 2005197697800. Its totient is φ = 1998802575360.

The previous prime is 2002000019989. The next prime is 2002000020061. The reversal of 2002000020001 is 1000200002002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 95681336976 + 1906318683025 = 309324^2 + 1380695^2 .

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 2002000020001 - 2⁹ = 2002000019489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2002000020061) 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, 27250045 + ... + 27323413.

It is an arithmetic number, because the mean of its divisors is an integer number (250649712225).

Almost surely, 2^{2002000020001} is an apocalyptic number.

It is an amenable number.

2002000020001 is a deficient number, since it is larger than the sum of its proper divisors (3197677799).

2002000020001 is an equidigital number, since it uses as much as digits as its factorization.

2002000020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116579.

The product of its (nonzero) digits is 8, while the sum is 7.

Adding to 2002000020001 its reverse (1000200002002), we get a palindrome (3002200022003).

The spelling of 2002000020001 in words is "two trillion, two billion, twenty thousand, one".