1214225321 has 2 divisors, whose sum is σ = 1214225322. Its totient is φ = 1214225320.

The previous prime is 1214225317. The next prime is 1214225347. The reversal of 1214225321 is 1235224121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1212432400 + 1792921 = 34820^2 + 1339^2 .

It is an emirp because it is prime and its reverse (1235224121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1214225321 - 2² = 1214225317 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1214225351) 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, 607112660 + 607112661.

It is an arithmetic number, because the mean of its divisors is an integer number (607112661).

Almost surely, 2^1214225321 is an apocalyptic number.

It is an amenable number.

1214225321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1214225321 is an equidigital number, since it uses as much as digits as its factorization.

1214225321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 23.

The square root of 1214225321 is about 34845.7360519189. The cubic root of 1214225321 is about 1066.8411570773.

Adding to 1214225321 its reverse (1235224121), we get a palindrome (2449449442).

The spelling of 1214225321 in words is "one billion, two hundred fourteen million, two hundred twenty-five thousand, three hundred twenty-one".