13224022421 has 8 divisors (see below), whose sum is σ = 13554221184. Its totient is φ = 12896812240.

The previous prime is 13224022397. The next prime is 13224022451. The reversal of 13224022421 is 12422042231.

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

It is a de Polignac number, because none of the positive numbers 2^k-13224022421 is a prime.

It is a super-2 number, since 2×13224022421² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13224022451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 738185 + ... + 755886.

It is an arithmetic number, because the mean of its divisors is an integer number (1694277648).

Almost surely, 2^13224022421 is an apocalyptic number.

It is an amenable number.

13224022421 is a deficient number, since it is larger than the sum of its proper divisors (330198763).

13224022421 is a wasteful number, since it uses less digits than its factorization.

13224022421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494291.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 13224022421 its reverse (12422042231), we get a palindrome (25646064652).

The spelling of 13224022421 in words is "thirteen billion, two hundred twenty-four million, twenty-two thousand, four hundred twenty-one".