118500121 has 4 divisors (see below), whose sum is σ = 118529892. Its totient is φ = 118470352.

The previous prime is 118500101. The next prime is 118500181. The reversal of 118500121 is 121005811.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38576521 + 79923600 = 6211^2 + 8940^2 .

It is a cyclic number.

It is not a de Polignac number, because 118500121 - 2⁷ = 118499993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118500101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7786 + ... + 17251.

It is an arithmetic number, because the mean of its divisors is an integer number (29632473).

Almost surely, 2^118500121 is an apocalyptic number.

It is an amenable number.

118500121 is a deficient number, since it is larger than the sum of its proper divisors (29771).

118500121 is an equidigital number, since it uses as much as digits as its factorization.

118500121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29770.

The product of its (nonzero) digits is 80, while the sum is 19.

The square root of 118500121 is about 10885.7760862513. The cubic root of 118500121 is about 491.1787821143.

Adding to 118500121 its reverse (121005811), we get a palindrome (239505932).

The spelling of 118500121 in words is "one hundred eighteen million, five hundred thousand, one hundred twenty-one".