1224355133 has 4 divisors (see below), whose sum is σ = 1231119708. Its totient is φ = 1217590560.

The previous prime is 1224355109. The next prime is 1224355157. The reversal of 1224355133 is 3315534221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1224355109) and next prime (1224355157).

It can be written as a sum of positive squares in 2 ways, for example, as 550277764 + 674077369 = 23458^2 + 25963^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224355133 - 2²⁶ = 1157246269 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1224355096 and 1224355105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224355183) 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, 3382016 + ... + 3382377.

It is an arithmetic number, because the mean of its divisors is an integer number (307779927).

Almost surely, 2^1224355133 is an apocalyptic number.

It is an amenable number.

1224355133 is a deficient number, since it is larger than the sum of its proper divisors (6764575).

1224355133 is an equidigital number, since it uses as much as digits as its factorization.

1224355133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6764574.

The product of its digits is 10800, while the sum is 29.

The square root of 1224355133 is about 34990.7864015658. The cubic root of 1224355133 is about 1069.7996926116.

Adding to 1224355133 its reverse (3315534221), we get a palindrome (4539889354).

It can be divided in two parts, 12243 and 55133, that added together give a palindrome (67376).

The spelling of 1224355133 in words is "one billion, two hundred twenty-four million, three hundred fifty-five thousand, one hundred thirty-three".