2021100011021 has 16 divisors (see below), whose sum is σ = 2491879488000. Its totient is φ = 1596301665408.

The previous prime is 2021100011017. The next prime is 2021100011053. The reversal of 2021100011021 is 1201100011202.

It is a cyclic number.

It is not a de Polignac number, because 2021100011021 - 2² = 2021100011017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2021100010993 and 2021100011011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021100011071) 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 15 ways as a sum of consecutive naturals, for example, 19464821 + ... + 19568378.

It is an arithmetic number, because the mean of its divisors is an integer number (155742468000).

Almost surely, 2^{2021100011021} is an apocalyptic number.

It is an amenable number.

2021100011021 is a deficient number, since it is larger than the sum of its proper divisors (470779476979).

2021100011021 is a wasteful number, since it uses less digits than its factorization.

2021100011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39033788.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2021100011021 its reverse (1201100011202), we get a palindrome (3222200022223).

The spelling of 2021100011021 in words is "two trillion, twenty-one billion, one hundred million, eleven thousand, twenty-one".