1000200001 has 2 divisors, whose sum is σ = 1000200002. Its totient is φ = 1000200000.

The previous prime is 1000199987. The next prime is 1000200013. The reversal of 1000200001 is 1000020001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 534719376 + 465480625 = 23124^2 + 21575^2 .

It is an emirp because it is prime and its reverse (1000020001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1000200001 - 2¹¹ = 1000197953 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000200031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500100000 + 500100001.

It is an arithmetic number, because the mean of its divisors is an integer number (500100001).

Almost surely, 2^1000200001 is an apocalyptic number.

It is an amenable number.

1000200001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000200001 is an equidigital number, since it uses as much as digits as its factorization.

1000200001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2, while the sum is 4.

The square root of 1000200001 is about 31625.9387370557. The cubic root of 1000200001 is about 1000.0666625560.

Adding to 1000200001 its reverse (1000020001), we get a palindrome (2000220002).

It can be divided in two parts, 100020000 and 1, that added together give a palindrome (100020001).

The spelling of 1000200001 in words is "one billion, two hundred thousand, one".