13224301242421 has 4 divisors (see below), whose sum is σ = 13245665219200. Its totient is φ = 13202937265644.

The previous prime is 13224301242419. The next prime is 13224301242487. The reversal of 13224301242421 is 12424210342231.

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.

It is a cyclic number.

It is not a de Polignac number, because 13224301242421 - 2¹ = 13224301242419 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 (13224301248421) 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, 10681987461 + ... + 10681988698.

It is an arithmetic number, because the mean of its divisors is an integer number (3311416304800).

Almost surely, 2^{13224301242421} is an apocalyptic number.

It is an amenable number.

13224301242421 is a deficient number, since it is larger than the sum of its proper divisors (21363976779).

13224301242421 is an equidigital number, since it uses as much as digits as its factorization.

13224301242421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21363976778.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 13224301242421 its reverse (12424210342231), we get a palindrome (25648511584652).

The spelling of 13224301242421 in words is "thirteen trillion, two hundred twenty-four billion, three hundred one million, two hundred forty-two thousand, four hundred twenty-one".