118021569121 has 8 divisors (see below), whose sum is σ = 121838522624. Its totient is φ = 114205228560.

The previous prime is 118021569109. The next prime is 118021569139. The reversal of 118021569121 is 121965120811.

It is a happy number.

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 118021569121 - 2¹⁷ = 118021438049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118021569181) 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, 255430 + ... + 548896.

It is an arithmetic number, because the mean of its divisors is an integer number (15229815328).

Almost surely, 2^118021569121 is an apocalyptic number.

It is an amenable number.

118021569121 is a deficient number, since it is larger than the sum of its proper divisors (3816953503).

118021569121 is a wasteful number, since it uses less digits than its factorization.

118021569121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306471.

The product of its (nonzero) digits is 8640, while the sum is 37.

Adding to 118021569121 its reverse (121965120811), we get a palindrome (239986689932).

The spelling of 118021569121 in words is "one hundred eighteen billion, twenty-one million, five hundred sixty-nine thousand, one hundred twenty-one".