1116222409 has 2 divisors, whose sum is σ = 1116222410. Its totient is φ = 1116222408.

The previous prime is 1116222391. The next prime is 1116222413. The reversal of 1116222409 is 9042226111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1034265600 + 81956809 = 32160^2 + 9053^2 .

It is a cyclic number.

It is not a de Polignac number, because 1116222409 - 2⁵ = 1116222377 is a prime.

It is not a weakly prime, because it can be changed into another prime (1116222439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558111204 + 558111205.

It is an arithmetic number, because the mean of its divisors is an integer number (558111205).

Almost surely, 2^1116222409 is an apocalyptic number.

It is an amenable number.

1116222409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1116222409 is an equidigital number, since it uses as much as digits as its factorization.

1116222409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1116222409 is about 33409.9148307804. The cubic root of 1116222409 is about 1037.3299386233.

The spelling of 1116222409 in words is "one billion, one hundred sixteen million, two hundred twenty-two thousand, four hundred nine".