2112110212221 has 12 divisors (see below), whose sum is σ = 3149239600000. Its totient is φ = 1362651749640.

The previous prime is 2112110212217. The next prime is 2112110212279. The reversal of 2112110212221 is 1222120112112.

2112110212221 is a `hidden beast` number, since 21 + 1 + 211 + 0 + 212 + 221 = 666.

It is not a de Polignac number, because 2112110212221 - 2² = 2112110212217 is a prime.

It is a super-2 number, since 2×2112110212221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2112110212194 and 2112110212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112110212021) 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 11 ways as a sum of consecutive naturals, for example, 3785143471 + ... + 3785144028.

Almost surely, 2^{2112110212221} is an apocalyptic number.

It is an amenable number.

2112110212221 is a deficient number, since it is larger than the sum of its proper divisors (1037129387779).

2112110212221 is a wasteful number, since it uses less digits than its factorization.

2112110212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7570287536 (or 7570287533 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2112110212221 its reverse (1222120112112), we get a palindrome (3334230324333).

The spelling of 2112110212221 in words is "two trillion, one hundred twelve billion, one hundred ten million, two hundred twelve thousand, two hundred twenty-one".