20001100101 has 32 divisors (see below), whose sum is σ = 28922328960. Its totient is φ = 12251678976.

The previous prime is 20001100073. The next prime is 20001100111. The reversal of 20001100101 is 10100110002.

It is not a de Polignac number, because 20001100101 - 2³⁰ = 18927358277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20001100101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001100111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 653595 + ... + 683511.

It is an arithmetic number, because the mean of its divisors is an integer number (903822780).

Almost surely, 2^20001100101 is an apocalyptic number.

It is an amenable number.

20001100101 is a deficient number, since it is larger than the sum of its proper divisors (8921228859).

20001100101 is a wasteful number, since it uses less digits than its factorization.

20001100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30293.

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

Adding to 20001100101 its reverse (10100110002), we get a palindrome (30101210103).

Subtracting from 20001100101 its reverse (10100110002), we obtain a palindrome (9900990099).

The spelling of 20001100101 in words is "twenty billion, one million, one hundred thousand, one hundred one".