1111091112 has 24 divisors (see below), whose sum is σ = 3009205290. Its totient is φ = 370363680.

The previous prime is 1111091089. The next prime is 1111091131. The reversal of 1111091112 is 2111901111.

It can be written as a sum of positive squares in only one way, i.e., 1072824516 + 38266596 = 32754^2 + 6186^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7715839 + ... + 7715982.

Almost surely, 2^1111091112 is an apocalyptic number.

1111091112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1111091112 is an abundant number, since it is smaller than the sum of its proper divisors (1898114178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1111091112 is a wasteful number, since it uses less digits than its factorization.

1111091112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15431833 (or 15431826 counting only the distinct ones).

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

The square root of 1111091112 is about 33333.0333453168. The cubic root of 1111091112 is about 1035.7379544252.

Adding to 1111091112 its reverse (2111901111), we get a palindrome (3222992223).

The spelling of 1111091112 in words is "one billion, one hundred eleven million, ninety-one thousand, one hundred twelve".