20201101001 has 4 divisors (see below), whose sum is σ = 20401112004. Its totient is φ = 20001090000.

The previous prime is 20201100967. The next prime is 20201101069. The reversal of 20201101001 is 10010110202.

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 18258495376 + 1942605625 = 135124^2 + 44075^2 .

It is a cyclic number.

It is not a de Polignac number, because 20201101001 - 2³⁴ = 3021231817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20201101001.

It is not an unprimeable number, because it can be changed into a prime (20201101091) 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, 100005350 + ... + 100005551.

It is an arithmetic number, because the mean of its divisors is an integer number (5100278001).

Almost surely, 2^20201101001 is an apocalyptic number.

It is an amenable number.

20201101001 is a deficient number, since it is larger than the sum of its proper divisors (200011003).

20201101001 is a wasteful number, since it uses less digits than its factorization.

20201101001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200011002.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 20201101001 its reverse (10010110202), we get a palindrome (30211211203).

The spelling of 20201101001 in words is "twenty billion, two hundred one million, one hundred one thousand, one".