20102000001 has 4 divisors (see below), whose sum is σ = 26802666672. Its totient is φ = 13401333332.

The previous prime is 20101999997. The next prime is 20102000027. The reversal of 20102000001 is 10000020102.

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 20102000001 - 2² = 20101999997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20102000101) 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, 3350333331 + ... + 3350333336.

It is an arithmetic number, because the mean of its divisors is an integer number (6700666668).

Almost surely, 2^20102000001 is an apocalyptic number.

It is an amenable number.

20102000001 is a deficient number, since it is larger than the sum of its proper divisors (6700666671).

20102000001 is an equidigital number, since it uses as much as digits as its factorization.

20102000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6700666670.

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

Adding to 20102000001 its reverse (10000020102), we get a palindrome (30102020103).

The spelling of 20102000001 in words is "twenty billion, one hundred two million, one", and thus it is an aban number.