116985121 has 4 divisors (see below), whose sum is σ = 127620144. Its totient is φ = 106350100.

The previous prime is 116985091. The next prime is 116985139. The reversal of 116985121 is 121589611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 116985121 - 2⁷ = 116984993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116985191) 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 3 ways as a sum of consecutive naturals, for example, 5317495 + ... + 5317516.

It is an arithmetic number, because the mean of its divisors is an integer number (31905036).

Almost surely, 2^116985121 is an apocalyptic number.

116985121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

116985121 is a deficient number, since it is larger than the sum of its proper divisors (10635023).

116985121 is a wasteful number, since it uses less digits than its factorization.

116985121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10635022.

The product of its digits is 4320, while the sum is 34.

The square root of 116985121 is about 10815.9660225058. The cubic root of 116985121 is about 489.0765907831.

The spelling of 116985121 in words is "one hundred sixteen million, nine hundred eighty-five thousand, one hundred twenty-one".