20210001100101 has 48 divisors (see below), whose sum is σ = 30437639930880. Its totient is φ = 13400385329520.

The previous prime is 20210001100099. The next prime is 20210001100103. The reversal of 20210001100101 is 10100110001202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20210001100099) and next prime (20210001100103).

It is not a de Polignac number, because 20210001100101 - 2¹ = 20210001100099 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210001100103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46885906 + ... + 47314988.

It is an arithmetic number, because the mean of its divisors is an integer number (634117498560).

Almost surely, 2^{20210001100101} is an apocalyptic number.

It is an amenable number.

20210001100101 is a deficient number, since it is larger than the sum of its proper divisors (10227638830779).

20210001100101 is an equidigital number, since it uses as much as digits as its factorization.

20210001100101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430148 (or 430136 counting only the distinct ones).

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

Adding to 20210001100101 its reverse (10100110001202), we get a palindrome (30310111101303).

The spelling of 20210001100101 in words is "twenty trillion, two hundred ten billion, one million, one hundred thousand, one hundred one".