2021110101211 has 8 divisors (see below), whose sum is σ = 2140011598464. Its totient is φ = 1902210011520.

The previous prime is 2021110101191. The next prime is 2021110101217. The reversal of 2021110101211 is 1121010111202.

It is a happy number.

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

It is not a de Polignac number, because 2021110101211 - 2²³ = 2021101712603 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021110101191 and 2021110101200.

It is not an unprimeable number, because it can be changed into a prime (2021110101217) 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 7 ways as a sum of consecutive naturals, for example, 4577046 + ... + 4999156.

It is an arithmetic number, because the mean of its divisors is an integer number (267501449808).

Almost surely, 2^{2021110101211} is an apocalyptic number.

2021110101211 is a deficient number, since it is larger than the sum of its proper divisors (118901497253).

2021110101211 is a wasteful number, since it uses less digits than its factorization.

2021110101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703781.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2021110101211 its reverse (1121010111202), we get a palindrome (3142120212413).

Subtracting from 2021110101211 its reverse (1121010111202), we obtain a palindrome (900099990009).

The spelling of 2021110101211 in words is "two trillion, twenty-one billion, one hundred ten million, one hundred one thousand, two hundred eleven".