421222222 has 8 divisors (see below), whose sum is σ = 632147256. Its totient is φ = 210506472.

The previous prime is 421222213. The next prime is 421222231. The reversal of 421222222 is 222222124.

It is an interprime number because it is at equal distance from previous prime (421222213) and next prime (421222231).

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

421222222 is a modest number, since divided by 22222 gives 4212 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 421222222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47188 + ... + 55399.

It is an arithmetic number, because the mean of its divisors is an integer number (79018407).

Almost surely, 2^421222222 is an apocalyptic number.

421222222 is a deficient number, since it is larger than the sum of its proper divisors (210925034).

421222222 is a wasteful number, since it uses less digits than its factorization.

421222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104642.

The product of its digits is 512, while the sum is 19.

The square root of 421222222 is about 20523.6990330691. The cubic root of 421222222 is about 749.6129689029.

Adding to 421222222 its reverse (222222124), we get a palindrome (643444346).

It can be divided in two parts, 42122 and 2222, that added together give a palindrome (44344).

The spelling of 421222222 in words is "four hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty-two".