20201000001 has 64 divisors (see below), whose sum is σ = 34385143296. Its totient is φ = 10264320000.

The previous prime is 20200999919. The next prime is 20201000009. The reversal of 20201000001 is 10000010202.

It is a happy number.

It is not a de Polignac number, because 20201000001 - 2¹³ = 20200991809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20201000009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1010301 + ... + 1030101.

It is an arithmetic number, because the mean of its divisors is an integer number (537267864).

Almost surely, 2^20201000001 is an apocalyptic number.

20201000001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20201000001 is a deficient number, since it is larger than the sum of its proper divisors (14184143295).

20201000001 is a wasteful number, since it uses less digits than its factorization.

20201000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19962.

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

Adding to 20201000001 its reverse (10000010202), we get a palindrome (30201010203).

The spelling of 20201000001 in words is "twenty billion, two hundred one million, one", and thus it is an aban number.