120243213365 has 24 divisors (see below), whose sum is σ = 160172188344. Its totient is φ = 86583728000.

The previous prime is 120243213361. The next prime is 120243213379. The reversal of 120243213365 is 563312342021.

It can be written as a sum of positive squares in 4 ways, for example, as 82262270596 + 37980942769 = 286814^2 + 194887^2 .

It is not a de Polignac number, because 120243213365 - 2² = 120243213361 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120243213361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 922802 + ... + 1045011.

It is an arithmetic number, because the mean of its divisors is an integer number (6673841181).

Almost surely, 2^120243213365 is an apocalyptic number.

It is an amenable number.

120243213365 is a deficient number, since it is larger than the sum of its proper divisors (39928974979).

120243213365 is a wasteful number, since it uses less digits than its factorization.

120243213365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967941 (or 1967930 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 120243213365 its reverse (563312342021), we get a palindrome (683555555386).

The spelling of 120243213365 in words is "one hundred twenty billion, two hundred forty-three million, two hundred thirteen thousand, three hundred sixty-five".