421300221 has 16 divisors (see below), whose sum is σ = 579480768. Its totient is φ = 272131200.

The previous prime is 421300169. The next prime is 421300247. The reversal of 421300221 is 122003124.

It is not a de Polignac number, because 421300221 - 2⁶ = 421300157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421300221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421300421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4920 + ... + 29441.

It is an arithmetic number, because the mean of its divisors is an integer number (36217548).

Almost surely, 2^421300221 is an apocalyptic number.

It is an amenable number.

421300221 is a deficient number, since it is larger than the sum of its proper divisors (158180547).

421300221 is a wasteful number, since it uses less digits than its factorization.

421300221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34492.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 421300221 is about 20525.5991629964. The cubic root of 421300221 is about 749.6592354183.

Adding to 421300221 its reverse (122003124), we get a palindrome (543303345).

The spelling of 421300221 in words is "four hundred twenty-one million, three hundred thousand, two hundred twenty-one".