1228823611 has 2 divisors, whose sum is σ = 1228823612. Its totient is φ = 1228823610.

The previous prime is 1228823581. The next prime is 1228823627. The reversal of 1228823611 is 1163288221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1228823611 - 2¹⁷ = 1228692539 is a prime.

It is not a weakly prime, because it can be changed into another prime (1228823311) 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, 614411805 + 614411806.

It is an arithmetic number, because the mean of its divisors is an integer number (614411806).

Almost surely, 2^1228823611 is an apocalyptic number.

1228823611 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228823611 is an equidigital number, since it uses as much as digits as its factorization.

1228823611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 34.

The square root of 1228823611 is about 35054.5804567677. The cubic root of 1228823611 is about 1071.0995803225.

The spelling of 1228823611 in words is "one billion, two hundred twenty-eight million, eight hundred twenty-three thousand, six hundred eleven".