20200200002001 has 12 divisors (see below), whose sum is σ = 29178140154228. Its totient is φ = 13466766085344.

The previous prime is 20200200001981. The next prime is 20200200002009. The reversal of 20200200002001 is 10020000200202.

It can be written as a sum of positive squares in 2 ways, for example, as 7568743788225 + 12631456213776 = 2751135^2 + 3554076^2 .

It is not a de Polignac number, because 20200200002001 - 2⁶ = 20200200001937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (20200200002009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1256131 + ... + 6479063.

It is an arithmetic number, because the mean of its divisors is an integer number (2431511679519).

Almost surely, 2^{20200200002001} is an apocalyptic number.

It is an amenable number.

20200200002001 is a deficient number, since it is larger than the sum of its proper divisors (8977940152227).

20200200002001 is a wasteful number, since it uses less digits than its factorization.

20200200002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5652672 (or 5652669 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 20200200002001 its reverse (10020000200202), we get a palindrome (30220200202203).

The spelling of 20200200002001 in words is "twenty trillion, two hundred billion, two hundred million, two thousand, one".