20001101100103 has 4 divisors (see below), whose sum is σ = 20001258729720. Its totient is φ = 20000943470488.

The previous prime is 20001101100047. The next prime is 20001101100143. The reversal of 20001101100103 is 30100110110002.

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

It is a cyclic number.

It is not a de Polignac number, because 20001101100103 - 2¹³ = 20001101091911 is a prime.

It is a super-2 number, since 2×20001101100103² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20001101100103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001101100143) 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, 78624325 + ... + 78878302.

It is an arithmetic number, because the mean of its divisors is an integer number (5000314682430).

Almost surely, 2^{20001101100103} is an apocalyptic number.

20001101100103 is a deficient number, since it is larger than the sum of its proper divisors (157629617).

20001101100103 is a wasteful number, since it uses less digits than its factorization.

20001101100103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157629616.

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 20001101100103 its reverse (30100110110002), we get a palindrome (50101211210105).

The spelling of 20001101100103 in words is "twenty trillion, one billion, one hundred one million, one hundred thousand, one hundred three".