115121000 has 128 divisors (see below), whose sum is σ = 290908800. Its totient is φ = 42508800.

The previous prime is 115120997. The next prime is 115121021. The reversal of 115121000 is 121511.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1386959 + ... + 1387041.

It is an arithmetic number, because the mean of its divisors is an integer number (2272725).

Almost surely, 2^115121000 is an apocalyptic number.

115121000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115121000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145454400).

115121000 is an abundant number, since it is smaller than the sum of its proper divisors (175787800).

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

115121000 is a wasteful number, since it uses less digits than its factorization.

115121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 11.

The square root of 115121000 is about 10729.4454656333. The cubic root of 115121000 is about 486.4649087582.

Adding to 115121000 its reverse (121511), we get a palindrome (115242511).

The spelling of 115121000 in words is "one hundred fifteen million, one hundred twenty-one thousand".