1222030321 has 2 divisors, whose sum is σ = 1222030322. Its totient is φ = 1222030320.

The previous prime is 1222030309. The next prime is 1222030357. The reversal of 1222030321 is 1230302221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1166973921 + 55056400 = 34161^2 + 7420^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222030321 - 2¹¹ = 1222028273 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1222030295 and 1222030304.

It is not a weakly prime, because it can be changed into another prime (1222030301) 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, 611015160 + 611015161.

It is an arithmetic number, because the mean of its divisors is an integer number (611015161).

Almost surely, 2^1222030321 is an apocalyptic number.

It is an amenable number.

1222030321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222030321 is an equidigital number, since it uses as much as digits as its factorization.

1222030321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1222030321 is about 34957.5502717224. The cubic root of 1222030321 is about 1069.1221498190.

Adding to 1222030321 its reverse (1230302221), we get a palindrome (2452332542).

The spelling of 1222030321 in words is "one billion, two hundred twenty-two million, thirty thousand, three hundred twenty-one".