20011001000001 has 16 divisors (see below), whose sum is σ = 29120777683200. Its totient is φ = 12122101419920.

The previous prime is 20011000999999. The next prime is 20011001000027. The reversal of 20011001000001 is 10000010011002.

It is a cyclic number.

It is not a de Polignac number, because 20011001000001 - 2¹ = 20011000999999 is a prime.

It is a super-2 number, since 2×20011001000001² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20011001000041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144379035 + ... + 144517568.

It is an arithmetic number, because the mean of its divisors is an integer number (1820048605200).

Almost surely, 2^{20011001000001} is an apocalyptic number.

It is an amenable number.

20011001000001 is a deficient number, since it is larger than the sum of its proper divisors (9109776683199).

20011001000001 is a wasteful number, since it uses less digits than its factorization.

20011001000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288898716.

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 20011001000001 its reverse (10000010011002), we get a palindrome (30011011011003).

The spelling of 20011001000001 in words is "twenty trillion, eleven billion, one million, one", and thus it is an aban number and an uban number.