421110220 has 48 divisors (see below), whose sum is σ = 926976960. Its totient is φ = 160388096.

The previous prime is 421110203. The next prime is 421110227. The reversal of 421110220 is 22011124.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 421110220.

It is not an unprimeable number, because it can be changed into a prime (421110227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105216 + ... + 109144.

It is an arithmetic number, because the mean of its divisors is an integer number (19312020).

Almost surely, 2^421110220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421110220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (463488480).

421110220 is an abundant number, since it is smaller than the sum of its proper divisors (505866740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421110220 is a wasteful number, since it uses less digits than its factorization.

421110220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4194 (or 4192 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 421110220 is about 20520.9702499663. The cubic root of 421110220 is about 749.5465229037.

Adding to 421110220 its reverse (22011124), we get a palindrome (443121344).

The spelling of 421110220 in words is "four hundred twenty-one million, one hundred ten thousand, two hundred twenty".