20000002002001 has 16 divisors (see below), whose sum is σ = 23033798176896. Its totient is φ = 17010475744896.

The previous prime is 20000002001933. The next prime is 20000002002037. The reversal of 20000002002001 is 10020020000002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20000002002001 - 2³¹ = 19997854518353 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20000002092001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2192146 + ... + 6693691.

It is an arithmetic number, because the mean of its divisors is an integer number (1439612386056).

Almost surely, 2^{20000002002001} is an apocalyptic number.

It is an amenable number.

20000002002001 is a deficient number, since it is larger than the sum of its proper divisors (3033796174895).

20000002002001 is a wasteful number, since it uses less digits than its factorization.

20000002002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8888328.

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

Adding to 20000002002001 its reverse (10020020000002), we get a palindrome (30020022002003).

The spelling of 20000002002001 in words is "twenty trillion, two million, two thousand, one".