2021210112011 has 4 divisors (see below), whose sum is σ = 2021216206224. Its totient is φ = 2021204017800.

The previous prime is 2021210111993. The next prime is 2021210112059. The reversal of 2021210112011 is 1102110121202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021210112011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021210162011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2519120 + ... + 3223101.

It is an arithmetic number, because the mean of its divisors is an integer number (505304051556).

Almost surely, 2^{2021210112011} is an apocalyptic number.

2021210112011 is a deficient number, since it is larger than the sum of its proper divisors (6094213).

2021210112011 is an equidigital number, since it uses as much as digits as its factorization.

2021210112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6094212.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2021210112011 its reverse (1102110121202), we get a palindrome (3123320233213).

The spelling of 2021210112011 in words is "two trillion, twenty-one billion, two hundred ten million, one hundred twelve thousand, eleven".