224442244421 has 4 divisors (see below), whose sum is σ = 224455928844. Its totient is φ = 224428560000.

The previous prime is 224442244399. The next prime is 224442244423. The reversal of 224442244421 is 124442244422.

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 53749321921 + 170692922500 = 231839^2 + 413150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-224442244421 is a prime.

It is a super-3 number, since 3×224442244421³ (a number of 35 digits) contains 333 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 (224442244423) 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, 6817580 + ... + 6850421.

It is an arithmetic number, because the mean of its divisors is an integer number (56113982211).

Almost surely, 2^224442244421 is an apocalyptic number.

It is an amenable number.

224442244421 is a deficient number, since it is larger than the sum of its proper divisors (13684423).

224442244421 is a wasteful number, since it uses less digits than its factorization.

224442244421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13684422.

The product of its digits is 131072, while the sum is 35.

Adding to 224442244421 its reverse (124442244422), we get a palindrome (348884488843).

Subtracting from 224442244421 its reverse (124442244422), we obtain a palindrome (99999999999).

The spelling of 224442244421 in words is "two hundred twenty-four billion, four hundred forty-two million, two hundred forty-four thousand, four hundred twenty-one".