1121112169 has 2 divisors, whose sum is σ = 1121112170. Its totient is φ = 1121112168.

The previous prime is 1121112143. The next prime is 1121112217. The reversal of 1121112169 is 9612111211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 812934144 + 308178025 = 28512^2 + 17555^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121112169 - 2⁹ = 1121111657 is a prime.

It is a super-2 number, since 2×1121112169² = 2513784990959769122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1121512169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560556084 + 560556085.

It is an arithmetic number, because the mean of its divisors is an integer number (560556085).

Almost surely, 2^1121112169 is an apocalyptic number.

It is an amenable number.

1121112169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121112169 is an equidigital number, since it uses as much as digits as its factorization.

1121112169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 25.

The square root of 1121112169 is about 33483.0131409943. The cubic root of 1121112169 is about 1038.8424525434.

The spelling of 1121112169 in words is "one billion, one hundred twenty-one million, one hundred twelve thousand, one hundred sixty-nine".