20000100000001 has 4 divisors (see below), whose sum is σ = 21818290909104. Its totient is φ = 18181909090900.

The previous prime is 20000099999969. The next prime is 20000100000031. The reversal of 20000100000001 is 10000000100002.

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 20000100000001 - 2⁵ = 20000099999969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20000100000031) 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, 909095454535 + ... + 909095454556.

It is an arithmetic number, because the mean of its divisors is an integer number (5454572727276).

Almost surely, 2^{20000100000001} is an apocalyptic number.

It is an amenable number.

20000100000001 is a deficient number, since it is larger than the sum of its proper divisors (1818190909103).

20000100000001 is a wasteful number, since it uses less digits than its factorization.

20000100000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818190909102.

The product of its (nonzero) digits is 2, while the sum is 4.

Adding to 20000100000001 its reverse (10000000100002), we get a palindrome (30000100100003).

It can be divided in two parts, 20000 and 100000001, that added together give a palindrome (100020001).

The spelling of 20000100000001 in words is "twenty trillion, one hundred million, one", and thus it is an aban number.