1111224809 has 2 divisors, whose sum is σ = 1111224810. Its totient is φ = 1111224808.

The previous prime is 1111224781. The next prime is 1111224841. The reversal of 1111224809 is 9084221111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1110755584 + 469225 = 33328^2 + 685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111224809 is a prime.

It is a super-2 number, since 2×1111224809² = 2469641152274172962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1111224859) 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, 555612404 + 555612405.

It is an arithmetic number, because the mean of its divisors is an integer number (555612405).

Almost surely, 2^1111224809 is an apocalyptic number.

It is an amenable number.

1111224809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111224809 is an equidigital number, since it uses as much as digits as its factorization.

1111224809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 1111224809 is about 33335.0387580396. The cubic root of 1111224809 is about 1035.7794960239.

The spelling of 1111224809 in words is "one billion, one hundred eleven million, two hundred twenty-four thousand, eight hundred nine".