118307221121 has 8 divisors (see below), whose sum is σ = 122567578920. Its totient is φ = 114058916608.

The previous prime is 118307221111. The next prime is 118307221127. The reversal of 118307221121 is 121122703811.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 51619840000 + 66687381121 = 227200^2 + 258239^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 118307221121 - 2¹⁴ = 118307204737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118307221127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2993336 + ... + 3032601.

It is an arithmetic number, because the mean of its divisors is an integer number (15320947365).

Almost surely, 2^118307221121 is an apocalyptic number.

It is an amenable number.

118307221121 is a deficient number, since it is larger than the sum of its proper divisors (4260357799).

118307221121 is an equidigital number, since it uses as much as digits as its factorization.

118307221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6026643.

The product of its (nonzero) digits is 1344, while the sum is 29.

Adding to 118307221121 its reverse (121122703811), we get a palindrome (239429924932).

The spelling of 118307221121 in words is "one hundred eighteen billion, three hundred seven million, two hundred twenty-one thousand, one hundred twenty-one".