1002000201 has 4 divisors (see below), whose sum is σ = 1336000272. Its totient is φ = 668000132.

The previous prime is 1002000193. The next prime is 1002000217. The reversal of 1002000201 is 1020002001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1002000201 - 2³ = 1002000193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1002000201.

It is not an unprimeable number, because it can be changed into a prime (1002000001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167000031 + ... + 167000036.

It is an arithmetic number, because the mean of its divisors is an integer number (334000068).

Almost surely, 2^1002000201 is an apocalyptic number.

It is an amenable number.

1002000201 is a deficient number, since it is larger than the sum of its proper divisors (334000071).

1002000201 is an equidigital number, since it uses as much as digits as its factorization.

1002000201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334000070.

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 1002000201 is about 31654.3867576044. The cubic root of 1002000201 is about 1000.6662896262. Note that the first 3 decimals are identical.

Adding to 1002000201 its reverse (1020002001), we get a palindrome (2022002202).

The spelling of 1002000201 in words is "one billion, two million, two hundred one", and thus it is an aban number.