13424425453221 has 32 divisors (see below), whose sum is σ = 18138070056960. Its totient is φ = 8830779234816.

The previous prime is 13424425453189. The next prime is 13424425453249. The reversal of 13424425453221 is 12235452442431.

It is not a de Polignac number, because 13424425453221 - 2⁵ = 13424425453189 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13424425463221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203222620 + ... + 203288666.

It is an arithmetic number, because the mean of its divisors is an integer number (566814689280).

Almost surely, 2^{13424425453221} is an apocalyptic number.

It is an amenable number.

13424425453221 is a deficient number, since it is larger than the sum of its proper divisors (4713644603739).

13424425453221 is a wasteful number, since it uses less digits than its factorization.

13424425453221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68233.

The product of its digits is 921600, while the sum is 42.

Adding to 13424425453221 its reverse (12235452442431), we get a palindrome (25659877895652).

The spelling of 13424425453221 in words is "thirteen trillion, four hundred twenty-four billion, four hundred twenty-five million, four hundred fifty-three thousand, two hundred twenty-one".