1112111009 has 2 divisors, whose sum is σ = 1112111010. Its totient is φ = 1112111008.

The previous prime is 1112111003. The next prime is 1112111023. The reversal of 1112111009 is 9001112111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1107025984 + 5085025 = 33272^2 + 2255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1112111009 is a prime.

It is not a weakly prime, because it can be changed into another prime (1112111003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556055504 + 556055505.

It is an arithmetic number, because the mean of its divisors is an integer number (556055505).

Almost surely, 2^1112111009 is an apocalyptic number.

It is an amenable number.

1112111009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112111009 is an equidigital number, since it uses as much as digits as its factorization.

1112111009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 17.

The square root of 1112111009 is about 33348.3284288733. The cubic root of 1112111009 is about 1036.0547670222.

The spelling of 1112111009 in words is "one billion, one hundred twelve million, one hundred eleven thousand, nine".