1101112109 has 2 divisors, whose sum is σ = 1101112110. Its totient is φ = 1101112108.

The previous prime is 1101112079. The next prime is 1101112123. The reversal of 1101112109 is 9012111011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1080436900 + 20675209 = 32870^2 + 4547^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1101112109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101112409) 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, 550556054 + 550556055.

It is an arithmetic number, because the mean of its divisors is an integer number (550556055).

Almost surely, 2^1101112109 is an apocalyptic number.

It is an amenable number.

1101112109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101112109 is an equidigital number, since it uses as much as digits as its factorization.

1101112109 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1101112109 is about 33183.0093421317. The cubic root of 1101112109 is about 1032.6278794995.

The spelling of 1101112109 in words is "one billion, one hundred one million, one hundred twelve thousand, one hundred nine".