2243215221 has 64 divisors (see below), whose sum is σ = 3537408000. Its totient is φ = 1251936000.

The previous prime is 2243215181. The next prime is 2243215327. The reversal of 2243215221 is 1225123422.

It is not a de Polignac number, because 2243215221 - 2⁶ = 2243215157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2243215191 and 2243215200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243215621) 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 63 ways as a sum of consecutive naturals, for example, 2986596 + ... + 2987346.

It is an arithmetic number, because the mean of its divisors is an integer number (55272000).

Almost surely, 2^2243215221 is an apocalyptic number.

It is an amenable number.

2243215221 is a deficient number, since it is larger than the sum of its proper divisors (1294192779).

2243215221 is a wasteful number, since it uses less digits than its factorization.

2243215221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954.

The product of its digits is 1920, while the sum is 24.

The square root of 2243215221 is about 47362.5930561239. The cubic root of 2243215221 is about 1309.0522486641.

Adding to 2243215221 its reverse (1225123422), we get a palindrome (3468338643).

The spelling of 2243215221 in words is "two billion, two hundred forty-three million, two hundred fifteen thousand, two hundred twenty-one".