2021022021211 has 16 divisors (see below), whose sum is σ = 2075406727680. Its totient is φ = 1967324833440.

The previous prime is 2021022021181. The next prime is 2021022021229. The reversal of 2021022021211 is 1121202201202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2021022021211 - 2³³ = 2012432086619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021022021241) 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, 14367841 + ... + 14507821.

It is an arithmetic number, because the mean of its divisors is an integer number (129712920480).

Almost surely, 2^{2021022021211} is an apocalyptic number.

2021022021211 is a deficient number, since it is larger than the sum of its proper divisors (54384706469).

2021022021211 is a wasteful number, since it uses less digits than its factorization.

2021022021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142434.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2021022021211 its reverse (1121202201202), we get a palindrome (3142224222413).

The spelling of 2021022021211 in words is "two trillion, twenty-one billion, twenty-two million, twenty-one thousand, two hundred eleven".