221424301 has 8 divisors (see below), whose sum is σ = 257831424. Its totient is φ = 186210960.

The previous prime is 221424277. The next prime is 221424319. The reversal of 221424301 is 103424122.

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

It is a cyclic number.

It is not a de Polignac number, because 221424301 - 2⁹ = 221423789 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 (221424331) 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, 298045 + ... + 298786.

It is an arithmetic number, because the mean of its divisors is an integer number (32228928).

Almost surely, 2^221424301 is an apocalyptic number.

It is an amenable number.

221424301 is a deficient number, since it is larger than the sum of its proper divisors (36407123).

221424301 is an equidigital number, since it uses as much as digits as its factorization.

221424301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596891.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 221424301 is about 14880.3326911733. The cubic root of 221424301 is about 604.9810353093.

Adding to 221424301 its reverse (103424122), we get a palindrome (324848423).

The spelling of 221424301 in words is "two hundred twenty-one million, four hundred twenty-four thousand, three hundred one".