20201010001 has 4 divisors (see below), whose sum is σ = 20693717604. Its totient is φ = 19708302400.

The previous prime is 20201009993. The next prime is 20201010023. The reversal of 20201010001 is 10001010202.

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 11539915776 + 8661094225 = 107424^2 + 93065^2 .

It is a cyclic number.

It is not a de Polignac number, because 20201010001 - 2³ = 20201009993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20201010091) 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, 246353740 + ... + 246353821.

It is an arithmetic number, because the mean of its divisors is an integer number (5173429401).

Almost surely, 2^20201010001 is an apocalyptic number.

It is an amenable number.

20201010001 is a deficient number, since it is larger than the sum of its proper divisors (492707603).

20201010001 is an equidigital number, since it uses as much as digits as its factorization.

20201010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492707602.

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

Adding to 20201010001 its reverse (10001010202), we get a palindrome (30202020203).

The spelling of 20201010001 in words is "twenty billion, two hundred one million, ten thousand, one".