2021000100101 has 4 divisors (see below), whose sum is σ = 2028684511392. Its totient is φ = 2013315688812.

The previous prime is 2021000100079. The next prime is 2021000100103. The reversal of 2021000100101 is 1010010001202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2021000100101 - 2³⁴ = 2003820230917 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 (2021000100103) 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, 3842205251 + ... + 3842205776.

It is an arithmetic number, because the mean of its divisors is an integer number (507171127848).

Almost surely, 2^{2021000100101} is an apocalyptic number.

It is an amenable number.

2021000100101 is a deficient number, since it is larger than the sum of its proper divisors (7684411291).

2021000100101 is an equidigital number, since it uses as much as digits as its factorization.

2021000100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7684411290.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 2021000100101 its reverse (1010010001202), we get a palindrome (3031010101303).

The spelling of 2021000100101 in words is "two trillion, twenty-one billion, one hundred thousand, one hundred one".