20102001000001 has 4 divisors (see below), whose sum is σ = 20102439561604. Its totient is φ = 20101562438400.

The previous prime is 20102000999953. The next prime is 20102001000013. The reversal of 20102001000001 is 10000010020102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14740808069376 + 5361192930625 = 3839376^2 + 2315425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20102001000001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20102001000041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219212040 + ... + 219303721.

It is an arithmetic number, because the mean of its divisors is an integer number (5025609890401).

Almost surely, 2^{20102001000001} is an apocalyptic number.

It is an amenable number.

20102001000001 is a deficient number, since it is larger than the sum of its proper divisors (438561603).

20102001000001 is an equidigital number, since it uses as much as digits as its factorization.

20102001000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438561602.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 20102001000001 its reverse (10000010020102), we get a palindrome (30102011020103).

The spelling of 20102001000001 in words is "twenty trillion, one hundred two billion, one million, one", and thus it is an aban number.