1224204361 has 2 divisors, whose sum is σ = 1224204362. Its totient is φ = 1224204360.

The previous prime is 1224204343. The next prime is 1224204383. The reversal of 1224204361 is 1634024221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 850014025 + 374190336 = 29155^2 + 19344^2 .

It is an emirp because it is prime and its reverse (1634024221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1224204361 - 2¹⁷ = 1224073289 is a prime.

It is not a weakly prime, because it can be changed into another prime (1224204341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612102180 + 612102181.

It is an arithmetic number, because the mean of its divisors is an integer number (612102181).

Almost surely, 2^1224204361 is an apocalyptic number.

It is an amenable number.

1224204361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224204361 is an equidigital number, since it uses as much as digits as its factorization.

1224204361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 1224204361 is about 34988.6318823700. The cubic root of 1224204361 is about 1069.7557776678.

Adding to 1224204361 its reverse (1634024221), we get a palindrome (2858228582).

The spelling of 1224204361 in words is "one billion, two hundred twenty-four million, two hundred four thousand, three hundred sixty-one".