1224224231 has 2 divisors, whose sum is σ = 1224224232. Its totient is φ = 1224224230.

The previous prime is 1224224171. The next prime is 1224224249. The reversal of 1224224231 is 1324224221.

It is a strong prime.

It is an emirp because it is prime and its reverse (1324224221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1224224231 is a prime.

It is a super-2 number, since 2×1224224231² = 2997449935535082722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1224224197 and 1224224206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1224224831) 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, 612112115 + 612112116.

It is an arithmetic number, because the mean of its divisors is an integer number (612112116).

Almost surely, 2^1224224231 is an apocalyptic number.

1224224231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224224231 is an equidigital number, since it uses as much as digits as its factorization.

1224224231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1536, while the sum is 23.

The square root of 1224224231 is about 34988.9158305884. The cubic root of 1224224231 is about 1069.7615653541.

Adding to 1224224231 its reverse (1324224221), we get a palindrome (2548448452).

The spelling of 1224224231 in words is "one billion, two hundred twenty-four million, two hundred twenty-four thousand, two hundred thirty-one".