202020002000001 has 6 divisors (see below), whose sum is σ = 291806669555570. Its totient is φ = 134680001333328.

The previous prime is 202020001999999. The next prime is 202020002000087. The reversal of 202020002000001 is 100000200020202.

It can be written as a sum of positive squares in only one way, i.e., 201876470888976 + 143531111025 = 14208324^2 + 378855^2 .

It is not a de Polignac number, because 202020002000001 - 2¹ = 202020001999999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 22446666888889 = 202020002000001 / (2 + 0 + 2 + 0 + 2 + 0 + 0 + 0 + 2 + 0 + 0 + 0 + 0 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202020002002001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11223333444436 + ... + 11223333444453.

Almost surely, 2^{202020002000001} is an apocalyptic number.

It is an amenable number.

202020002000001 is a deficient number, since it is larger than the sum of its proper divisors (89786667555569).

202020002000001 is a wasteful number, since it uses less digits than its factorization.

202020002000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22446666888895 (or 22446666888892 counting only the distinct ones).

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

Adding to 202020002000001 its reverse (100000200020202), we get a palindrome (302020202020203).

The spelling of 202020002000001 in words is "two hundred two trillion, twenty billion, two million, one", and thus it is an aban number.