111112428515 has 8 divisors (see below), whose sum is σ = 145456270128. Its totient is φ = 80809038880.

The previous prime is 111112428509. The next prime is 111112428521. The reversal of 111112428515 is 515824211111.

It is an interprime number because it is at equal distance from previous prime (111112428509) and next prime (111112428521).

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

It is not a de Polignac number, because 111112428515 - 2⁴ = 111112428499 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1010112932 + ... + 1010113041.

It is an arithmetic number, because the mean of its divisors is an integer number (18182033766).

Almost surely, 2^111112428515 is an apocalyptic number.

111112428515 is a deficient number, since it is larger than the sum of its proper divisors (34343841613).

111112428515 is a wasteful number, since it uses less digits than its factorization.

111112428515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020225989.

The product of its digits is 3200, while the sum is 32.

Adding to 111112428515 its reverse (515824211111), we get a palindrome (626936639626).

The spelling of 111112428515 in words is "one hundred eleven billion, one hundred twelve million, four hundred twenty-eight thousand, five hundred fifteen".