2112011220221 has 8 divisors (see below), whose sum is σ = 2416325315520. Its totient is φ = 1808346676608.

The previous prime is 2112011220211. The next prime is 2112011220229. The reversal of 2112011220221 is 1220221102112.

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 2112011220221 - 2⁶ = 2112011220157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2112011220221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112011220229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162380951 + ... + 162393956.

It is an arithmetic number, because the mean of its divisors is an integer number (302040664440).

Almost surely, 2^{2112011220221} is an apocalyptic number.

It is an amenable number.

2112011220221 is a deficient number, since it is larger than the sum of its proper divisors (304314095299).

2112011220221 is an equidigital number, since it uses as much as digits as its factorization.

2112011220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324775843.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2112011220221 its reverse (1220221102112), we get a palindrome (3332232322333).

The spelling of 2112011220221 in words is "two trillion, one hundred twelve billion, eleven million, two hundred twenty thousand, two hundred twenty-one".