2110220212221 has 48 divisors (see below), whose sum is σ = 3387281384448. Its totient is φ = 1255183063200.

The previous prime is 2110220212193. The next prime is 2110220212229. The reversal of 2110220212221 is 1222120220112.

It is a happy number.

2110220212221 is a `hidden beast` number, since 2 + 1 + 10 + 220 + 212 + 221 = 666.

It is not a de Polignac number, because 2110220212221 - 2⁹ = 2110220211709 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2110220212194 and 2110220212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110220212229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1210570 + ... + 2384516.

It is an arithmetic number, because the mean of its divisors is an integer number (70568362176).

Almost surely, 2^{2110220212221} is an apocalyptic number.

It is an amenable number.

2110220212221 is a deficient number, since it is larger than the sum of its proper divisors (1277061172227).

2110220212221 is a wasteful number, since it uses less digits than its factorization.

2110220212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174302 (or 1174299 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2110220212221 its reverse (1222120220112), we get a palindrome (3332340432333).

The spelling of 2110220212221 in words is "two trillion, one hundred ten billion, two hundred twenty million, two hundred twelve thousand, two hundred twenty-one".