224424402421 has 4 divisors (see below), whose sum is σ = 224574120000. Its totient is φ = 224274684844.

The previous prime is 224424402409. The next prime is 224424402427. The reversal of 224424402421 is 124204424422.

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 224424402421 - 2⁹ = 224424401909 is a prime.

It is a super-2 number, since 2×224424402421² (a number of 24 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 (224424402427) 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, 74856541 + ... + 74859538.

It is an arithmetic number, because the mean of its divisors is an integer number (56143530000).

Almost surely, 2^224424402421 is an apocalyptic number.

It is an amenable number.

224424402421 is a deficient number, since it is larger than the sum of its proper divisors (149717579).

224424402421 is a wasteful number, since it uses less digits than its factorization.

224424402421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149717578.

The product of its (nonzero) digits is 32768, while the sum is 31.

Adding to 224424402421 its reverse (124204424422), we get a palindrome (348628826843).

The spelling of 224424402421 in words is "two hundred twenty-four billion, four hundred twenty-four million, four hundred two thousand, four hundred twenty-one".