13441521302221 has 4 divisors (see below), whose sum is σ = 13769363285244. Its totient is φ = 13113679319200.

The previous prime is 13441521302179. The next prime is 13441521302233. The reversal of 13441521302221 is 12220312514431.

13441521302221 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.

It can be written as a sum of positive squares in 2 ways, for example, as 186460739721 + 13255060562500 = 431811^2 + 3640750^2 .

It is a cyclic number.

It is not a de Polignac number, because 13441521302221 - 2⁹ = 13441521301709 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 (13441521302021) 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, 163920991450 + ... + 163920991531.

It is an arithmetic number, because the mean of its divisors is an integer number (3442340821311).

Almost surely, 2^{13441521302221} is an apocalyptic number.

It is an amenable number.

13441521302221 is a deficient number, since it is larger than the sum of its proper divisors (327841983023).

13441521302221 is an equidigital number, since it uses as much as digits as its factorization.

13441521302221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327841983022.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 13441521302221 its reverse (12220312514431), we get a palindrome (25661833816652).

The spelling of 13441521302221 in words is "thirteen trillion, four hundred forty-one billion, five hundred twenty-one million, three hundred two thousand, two hundred twenty-one".