3120224221 has 2 divisors, whose sum is σ = 3120224222. Its totient is φ = 3120224220.

The previous prime is 3120224201. The next prime is 3120224243. The reversal of 3120224221 is 1224220213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2468698596 + 651525625 = 49686^2 + 25525^2 .

It is an emirp because it is prime and its reverse (1224220213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3120224221 - 2¹⁵ = 3120191453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3120224201) 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 as a sum of consecutive naturals, namely, 1560112110 + 1560112111.

It is an arithmetic number, because the mean of its divisors is an integer number (1560112111).

Almost surely, 2^3120224221 is an apocalyptic number.

It is an amenable number.

3120224221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3120224221 is an equidigital number, since it uses as much as digits as its factorization.

3120224221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 3120224221 is about 55858.9672389313. The cubic root of 3120224221 is about 1461.2637180514.

Adding to 3120224221 its reverse (1224220213), we get a palindrome (4344444434).

The spelling of 3120224221 in words is "three billion, one hundred twenty million, two hundred twenty-four thousand, two hundred twenty-one".