201000000001 has 4 divisors (see below), whose sum is σ = 203421686832. Its totient is φ = 198578313172.

The previous prime is 200999999983. The next prime is 201000000023. The reversal of 201000000001 is 100000000102.

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 201000000001 - 2²³ = 200991611393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201000000031) 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, 1210843291 + ... + 1210843456.

It is an arithmetic number, because the mean of its divisors is an integer number (50855421708).

Almost surely, 2^201000000001 is an apocalyptic number.

It is an amenable number.

201000000001 is a deficient number, since it is larger than the sum of its proper divisors (2421686831).

201000000001 is an equidigital number, since it uses as much as digits as its factorization.

201000000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421686830.

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

Adding to 201000000001 its reverse (100000000102), we get a palindrome (301000000103).

The spelling of 201000000001 in words is "two hundred one billion, one", and thus it is an aban number.