11112131115 has 48 divisors (see below), whose sum is σ = 19942977600. Its totient is φ = 5717005056.

The previous prime is 11112131099. The next prime is 11112131117. The reversal of 11112131115 is 51113121111.

11112131115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11112131115 - 2⁴ = 11112131099 is a prime.

It is a super-2 number, since 2×11112131115² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11112131117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1780821 + ... + 1787049.

It is an arithmetic number, because the mean of its divisors is an integer number (415478700).

Almost surely, 2^11112131115 is an apocalyptic number.

11112131115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11112131115 is a deficient number, since it is larger than the sum of its proper divisors (8830846485).

11112131115 is a wasteful number, since it uses less digits than its factorization.

11112131115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7636 (or 7633 counting only the distinct ones).

The product of its digits is 30, while the sum is 18.

Adding to 11112131115 its reverse (51113121111), we get a palindrome (62225252226).

The spelling of 11112131115 in words is "eleven billion, one hundred twelve million, one hundred thirty-one thousand, one hundred fifteen".