13122201243240 has 48 divisors (see below), whose sum is σ = 42647154041700. Its totient is φ = 3499253664768.

The previous prime is 13122201243199. The next prime is 13122201243241. The reversal of 13122201243240 is 4234210222131.

13122201243240 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 220 + 1 + 2 + 432 + 4 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10706520614724 + 2415680628516 = 3272082^2 + 1554246^2 .

It is not an unprimeable number, because it can be changed into a prime (13122201243241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18225279145 + ... + 18225279864.

Almost surely, 2^{13122201243240} is an apocalyptic number.

13122201243240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13122201243240 is an abundant number, since it is smaller than the sum of its proper divisors (29524952798460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13122201243240 is a wasteful number, since it uses less digits than its factorization.

13122201243240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36450559026 (or 36450559019 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 13122201243240 its reverse (4234210222131), we get a palindrome (17356411465371).

The spelling of 13122201243240 in words is "thirteen trillion, one hundred twenty-two billion, two hundred one million, two hundred forty-three thousand, two hundred forty".