11521403313242 has 8 divisors (see below), whose sum is σ = 17525514899232. Its totient is φ = 5679565013500.

The previous prime is 11521403313241. The next prime is 11521403313263. The reversal of 11521403313242 is 24231330412511.

It is a happy number.

11521403313242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 11521403313199 and 11521403313208.

It is not an unprimeable number, because it can be changed into a prime (11521403313241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40568321384 + ... + 40568321667.

It is an arithmetic number, because the mean of its divisors is an integer number (2190689362404).

Almost surely, 2^{11521403313242} is an apocalyptic number.

11521403313242 is a deficient number, since it is larger than the sum of its proper divisors (6004111585990).

11521403313242 is an equidigital number, since it uses as much as digits as its factorization.

11521403313242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81136643124.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 11521403313242 its reverse (24231330412511), we get a palindrome (35752733725753).

The spelling of 11521403313242 in words is "eleven trillion, five hundred twenty-one billion, four hundred three million, three hundred thirteen thousand, two hundred forty-two".