2105230221 has 12 divisors (see below), whose sum is σ = 3044575872. Its totient is φ = 1401784776.

The previous prime is 2105230217. The next prime is 2105230247. The reversal of 2105230221 is 1220325012.

2105230221 is a `hidden beast` number, since 210 + 5 + 230 + 221 = 666.

It is not a de Polignac number, because 2105230221 - 2² = 2105230217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2105230194 and 2105230203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105230201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133981 + ... + 148866.

It is an arithmetic number, because the mean of its divisors is an integer number (253714656).

Almost surely, 2^2105230221 is an apocalyptic number.

It is an amenable number.

2105230221 is a deficient number, since it is larger than the sum of its proper divisors (939345651).

2105230221 is a wasteful number, since it uses less digits than its factorization.

2105230221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283680 (or 283677 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2105230221 is about 45882.7878512193. The cubic root of 2105230221 is about 1281.6414124990.

Adding to 2105230221 its reverse (1220325012), we get a palindrome (3325555233).

The spelling of 2105230221 in words is "two billion, one hundred five million, two hundred thirty thousand, two hundred twenty-one".