1228716011 has 2 divisors, whose sum is σ = 1228716012. Its totient is φ = 1228716010.

The previous prime is 1228715977. The next prime is 1228716019. The reversal of 1228716011 is 1106178221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1228716011 is a prime.

It is not a weakly prime, because it can be changed into another prime (1228716019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614358005 + 614358006.

It is an arithmetic number, because the mean of its divisors is an integer number (614358006).

Almost surely, 2^1228716011 is an apocalyptic number.

1228716011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228716011 is an equidigital number, since it uses as much as digits as its factorization.

1228716011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 29.

The square root of 1228716011 is about 35053.0456736644. The cubic root of 1228716011 is about 1071.0683163619.

The spelling of 1228716011 in words is "one billion, two hundred twenty-eight million, seven hundred sixteen thousand, eleven".