421304222 has 4 divisors (see below), whose sum is σ = 631956336. Its totient is φ = 210652110.

The previous prime is 421304207. The next prime is 421304227. The reversal of 421304222 is 222403124.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 421304194 and 421304203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421304227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105326054 + ... + 105326057.

It is an arithmetic number, because the mean of its divisors is an integer number (157989084).

Almost surely, 2^421304222 is an apocalyptic number.

421304222 is a deficient number, since it is larger than the sum of its proper divisors (210652114).

421304222 is a wasteful number, since it uses less digits than its factorization.

421304222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210652113.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 421304222 is about 20525.6966264242. The cubic root of 421304222 is about 749.6616085298.

Adding to 421304222 its reverse (222403124), we get a palindrome (643707346).

The spelling of 421304222 in words is "four hundred twenty-one million, three hundred four thousand, two hundred twenty-two".