20001110002101 has 12 divisors (see below), whose sum is σ = 28891003420812. Its totient is φ = 13333837398336.

The previous prime is 20001110002099. The next prime is 20001110002127. The reversal of 20001110002101 is 10120001110002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9617602703076 + 10383507299025 = 3101226^2 + 3222345^2 .

It is not a de Polignac number, because 20001110002101 - 2¹ = 20001110002099 is a prime.

It is a super-2 number, since 2×20001110002101² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001110002141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19123696 + ... + 20142441.

It is an arithmetic number, because the mean of its divisors is an integer number (2407583618401).

Almost surely, 2^{20001110002101} is an apocalyptic number.

It is an amenable number.

20001110002101 is a deficient number, since it is larger than the sum of its proper divisors (8889893418711).

20001110002101 is a wasteful number, since it uses less digits than its factorization.

20001110002101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39322740 (or 39322737 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 20001110002101 its reverse (10120001110002), we get a palindrome (30121111112103).

It can be divided in two parts, 20001110002 and 101, that multiplied together give a palindrome (2020112110202).

The spelling of 20001110002101 in words is "twenty trillion, one billion, one hundred ten million, two thousand, one hundred one".