201020000001 has 16 divisors (see below), whose sum is σ = 275284912704. Its totient is φ = 130384586304.

The previous prime is 201019999997. The next prime is 201020000021. The reversal of 201020000001 is 100000020102.

It is a happy number.

It is not a de Polignac number, because 201020000001 - 2² = 201019999997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201020000021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2972106 + ... + 3038988.

It is an arithmetic number, because the mean of its divisors is an integer number (17205307044).

Almost surely, 2^201020000001 is an apocalyptic number.

It is an amenable number.

201020000001 is a deficient number, since it is larger than the sum of its proper divisors (74264912703).

201020000001 is a wasteful number, since it uses less digits than its factorization.

201020000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94000.

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

Adding to 201020000001 its reverse (100000020102), we get a palindrome (301020020103).

The spelling of 201020000001 in words is "two hundred one billion, twenty million, one", and thus it is an aban number.