1224242133 has 4 divisors (see below), whose sum is σ = 1632322848. Its totient is φ = 816161420.

The previous prime is 1224242087. The next prime is 1224242147. The reversal of 1224242133 is 3312424221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3312424221 = 3 ⋅1104141407.

It is a cyclic number.

It is not a de Polignac number, because 1224242133 - 2⁶ = 1224242069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224242933) 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 in 3 ways as a sum of consecutive naturals, for example, 204040353 + ... + 204040358.

It is an arithmetic number, because the mean of its divisors is an integer number (408080712).

Almost surely, 2^1224242133 is an apocalyptic number.

It is an amenable number.

1224242133 is a deficient number, since it is larger than the sum of its proper divisors (408080715).

1224242133 is an equidigital number, since it uses as much as digits as its factorization.

1224242133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408080714.

The product of its digits is 2304, while the sum is 24.

The square root of 1224242133 is about 34989.1716535273. The cubic root of 1224242133 is about 1069.7667797523.

Adding to 1224242133 its reverse (3312424221), we get a palindrome (4536666354).

The spelling of 1224242133 in words is "one billion, two hundred twenty-four million, two hundred forty-two thousand, one hundred thirty-three".