224106421 has 16 divisors (see below), whose sum is σ = 279797760. Its totient is φ = 174383280.

The previous prime is 224106413. The next prime is 224106433. The reversal of 224106421 is 124601422.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 224106421 - 2³ = 224106413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 224106392 and 224106401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224116421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69180 + ... + 72346.

It is an arithmetic number, because the mean of its divisors is an integer number (17487360).

Almost surely, 2^224106421 is an apocalyptic number.

It is an amenable number.

224106421 is a deficient number, since it is larger than the sum of its proper divisors (55691339).

224106421 is a wasteful number, since it uses less digits than its factorization.

224106421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4104.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 224106421 is about 14970.1844010019. The cubic root of 224106421 is about 607.4139567775.

Adding to 224106421 its reverse (124601422), we get a palindrome (348707843).

The spelling of 224106421 in words is "two hundred twenty-four million, one hundred six thousand, four hundred twenty-one".