2230221221 has 2 divisors, whose sum is σ = 2230221222. Its totient is φ = 2230221220.

The previous prime is 2230221209. The next prime is 2230221229. The reversal of 2230221221 is 1221220322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1891293121 + 338928100 = 43489^2 + 18410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2230221221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2230221221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2230221229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115110610 + 1115110611.

It is an arithmetic number, because the mean of its divisors is an integer number (1115110611).

Almost surely, 2^2230221221 is an apocalyptic number.

It is an amenable number.

2230221221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2230221221 is an equidigital number, since it uses as much as digits as its factorization.

2230221221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2230221221 is about 47225.2180619635. The cubic root of 2230221221 is about 1306.5197565452.

Adding to 2230221221 its reverse (1221220322), we get a palindrome (3451441543).

The spelling of 2230221221 in words is "two billion, two hundred thirty million, two hundred twenty-one thousand, two hundred twenty-one".