13522301421 has 4 divisors (see below), whose sum is σ = 18029735232. Its totient is φ = 9014867612.

The previous prime is 13522301411. The next prime is 13522301437. The reversal of 13522301421 is 12410322531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12410322531 = 3 ⋅4136774177.

It is a cyclic number.

It is not a de Polignac number, because 13522301421 - 2⁷ = 13522301293 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13522301391 and 13522301400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13522301411) 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 3 ways as a sum of consecutive naturals, for example, 2253716901 + ... + 2253716906.

It is an arithmetic number, because the mean of its divisors is an integer number (4507433808).

Almost surely, 2^13522301421 is an apocalyptic number.

It is an amenable number.

13522301421 is a deficient number, since it is larger than the sum of its proper divisors (4507433811).

13522301421 is an equidigital number, since it uses as much as digits as its factorization.

13522301421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4507433810.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 13522301421 its reverse (12410322531), we get a palindrome (25932623952).

The spelling of 13522301421 in words is "thirteen billion, five hundred twenty-two million, three hundred one thousand, four hundred twenty-one".