1115112081 has 8 divisors (see below), whose sum is σ = 1486971040. Its totient is φ = 743330592.

The previous prime is 1115112079. The next prime is 1115112101. The reversal of 1115112081 is 1802115111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1115112081 - 2¹ = 1115112079 is a prime.

It is a super-2 number, since 2×1115112081² = 2486949906384301122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1115112041) 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 in 7 ways as a sum of consecutive naturals, for example, 42021 + ... + 63213.

It is an arithmetic number, because the mean of its divisors is an integer number (185871380).

Almost surely, 2^1115112081 is an apocalyptic number.

It is an amenable number.

1115112081 is a deficient number, since it is larger than the sum of its proper divisors (371858959).

1115112081 is a wasteful number, since it uses less digits than its factorization.

1115112081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38735.

The product of its (nonzero) digits is 80, while the sum is 21.

The square root of 1115112081 is about 33393.2939525289. The cubic root of 1115112081 is about 1036.9858738037.

Adding to 1115112081 its reverse (1802115111), we get a palindrome (2917227192).

It can be divided in two parts, 11151 and 12081, that added together give a palindrome (23232).

The spelling of 1115112081 in words is "one billion, one hundred fifteen million, one hundred twelve thousand, eighty-one".