1224204073 has 2 divisors, whose sum is σ = 1224204074. Its totient is φ = 1224204072.

The previous prime is 1224204071. The next prime is 1224204083. The reversal of 1224204073 is 3704024221.

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., 1099055104 + 125148969 = 33152^2 + 11187^2 .

It is an emirp because it is prime and its reverse (3704024221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1224204073 - 2¹ = 1224204071 is a prime.

It is a super-2 number, since 2×1224204073² = 2997351224699578658, which contains 22 as substring.

Together with 1224204071, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1224204071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612102036 + 612102037.

It is an arithmetic number, because the mean of its divisors is an integer number (612102037).

Almost surely, 2^1224204073 is an apocalyptic number.

It is an amenable number.

1224204073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224204073 is an equidigital number, since it uses as much as digits as its factorization.

1224204073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 1224204073 is about 34988.6277667473. The cubic root of 1224204073 is about 1069.7556937794.

Adding to 1224204073 its reverse (3704024221), we get a palindrome (4928228294).

The spelling of 1224204073 in words is "one billion, two hundred twenty-four million, two hundred four thousand, seventy-three".