184381221121 has 4 divisors (see below), whose sum is σ = 184452331012. Its totient is φ = 184310111232.

The previous prime is 184381221103. The next prime is 184381221133. The reversal of 184381221121 is 121122183481.

184381221121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121122183481 = 13 ⋅9317091037.

It can be written as a sum of positive squares in 2 ways, for example, as 120214758400 + 64166462721 = 346720^2 + 253311^2 .

It is a cyclic number.

It is not a de Polignac number, because 184381221121 - 2¹⁵ = 184381188353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (184381221191) 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 3 ways as a sum of consecutive naturals, for example, 35551056 + ... + 35556241.

It is an arithmetic number, because the mean of its divisors is an integer number (46113082753).

Almost surely, 2^184381221121 is an apocalyptic number.

It is an amenable number.

184381221121 is a deficient number, since it is larger than the sum of its proper divisors (71109891).

184381221121 is an equidigital number, since it uses as much as digits as its factorization.

184381221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71109890.

The product of its digits is 6144, while the sum is 34.

The spelling of 184381221121 in words is "one hundred eighty-four billion, three hundred eighty-one million, two hundred twenty-one thousand, one hundred twenty-one".