1224512279 has 2 divisors, whose sum is σ = 1224512280. Its totient is φ = 1224512278.

The previous prime is 1224512257. The next prime is 1224512281. The reversal of 1224512279 is 9722154221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1224512279 is a prime.

Together with 1224512281, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1224512879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612256139 + 612256140.

It is an arithmetic number, because the mean of its divisors is an integer number (612256140).

Almost surely, 2^1224512279 is an apocalyptic number.

1224512279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224512279 is an equidigital number, since it uses as much as digits as its factorization.

1224512279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 35.

The square root of 1224512279 is about 34993.0318635011. The cubic root of 1224512279 is about 1069.8454602558.

The spelling of 1224512279 in words is "one billion, two hundred twenty-four million, five hundred twelve thousand, two hundred seventy-nine".