20002100101 has 4 divisors (see below), whose sum is σ = 20002719852. Its totient is φ = 20001480352.

The previous prime is 20002100093. The next prime is 20002100119. The reversal of 20002100101 is 10100120002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16991383201 + 3010716900 = 130351^2 + 54870^2 .

It is a cyclic number.

It is not a de Polignac number, because 20002100101 - 2³ = 20002100093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002100401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258640 + ... + 326953.

It is an arithmetic number, because the mean of its divisors is an integer number (5000679963).

Almost surely, 2^20002100101 is an apocalyptic number.

It is an amenable number.

20002100101 is a deficient number, since it is larger than the sum of its proper divisors (619751).

20002100101 is an equidigital number, since it uses as much as digits as its factorization.

20002100101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619750.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 20002100101 its reverse (10100120002), we get a palindrome (30102220103).

The spelling of 20002100101 in words is "twenty billion, two million, one hundred thousand, one hundred one".