115121121018 has 16 divisors (see below), whose sum is σ = 230279386656. Its totient is φ = 38367516240.

The previous prime is 115121120993. The next prime is 115121121023. The reversal of 115121121018 is 810121121511.

It is a Curzon 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, 1507321 + ... + 1581852.

It is an arithmetic number, because the mean of its divisors is an integer number (14392461666).

Almost surely, 2^115121121018 is an apocalyptic number.

115121121018 is an abundant number, since it is smaller than the sum of its proper divisors (115158265638).

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

115121121018 is a wasteful number, since it uses less digits than its factorization.

115121121018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3095389.

The product of its (nonzero) digits is 160, while the sum is 24.

Adding to 115121121018 its reverse (810121121511), we get a palindrome (925242242529).

The spelling of 115121121018 in words is "one hundred fifteen billion, one hundred twenty-one million, one hundred twenty-one thousand, eighteen".