2102224221 has 24 divisors (see below), whose sum is σ = 3095127360. Its totient is φ = 1374555456.

The previous prime is 2102224213. The next prime is 2102224237. The reversal of 2102224221 is 1224222012.

2102224221 is a `hidden beast` number, since 21 + 0 + 222 + 422 + 1 = 666.

It is not a de Polignac number, because 2102224221 - 2³ = 2102224213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2102224194 and 2102224203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102224121) 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 23 ways as a sum of consecutive naturals, for example, 238336 + ... + 246998.

It is an arithmetic number, because the mean of its divisors is an integer number (128963640).

Almost surely, 2^2102224221 is an apocalyptic number.

It is an amenable number.

2102224221 is a deficient number, since it is larger than the sum of its proper divisors (992903139).

2102224221 is a wasteful number, since it uses less digits than its factorization.

2102224221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9185 (or 9182 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 2102224221 is about 45850.0187677170. The cubic root of 2102224221 is about 1281.0311151574.

Adding to 2102224221 its reverse (1224222012), we get a palindrome (3326446233).

The spelling of 2102224221 in words is "two billion, one hundred two million, two hundred twenty-four thousand, two hundred twenty-one".