2021100110121 has 8 divisors (see below), whose sum is σ = 2704817992320. Its totient is φ = 1342391150672.

The previous prime is 2021100110087. The next prime is 2021100110153. The reversal of 2021100110121 is 1210110011202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2021100110121 - 2¹⁹ = 2021099585833 is a prime.

It is a super-2 number, since 2×2021100110121² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2021100110097 and 2021100110106.

It is not an unprimeable number, because it can be changed into a prime (2021100110521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1252229745 + ... + 1252231358.

It is an arithmetic number, because the mean of its divisors is an integer number (338102249040).

Almost surely, 2^{2021100110121} is an apocalyptic number.

It is an amenable number.

2021100110121 is a deficient number, since it is larger than the sum of its proper divisors (683717882199).

2021100110121 is a wasteful number, since it uses less digits than its factorization.

2021100110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504461375.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2021100110121 its reverse (1210110011202), we get a palindrome (3231210121323).

The spelling of 2021100110121 in words is "two trillion, twenty-one billion, one hundred million, one hundred ten thousand, one hundred twenty-one".