441212220 has 144 divisors (see below), whose sum is σ = 1478917440. Its totient is φ = 105904128.

The previous prime is 441212209. The next prime is 441212221. The reversal of 441212220 is 22212144.

441212220 is a `hidden beast` number, since 441 + 2 + 1 + 2 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 441212193 and 441212202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (441212221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67246 + ... + 73514.

It is an arithmetic number, because the mean of its divisors is an integer number (10270260).

Almost surely, 2^441212220 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 441212220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (739458720).

441212220 is an abundant number, since it is smaller than the sum of its proper divisors (1037705220).

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

441212220 is a wasteful number, since it uses less digits than its factorization.

441212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6324 (or 6319 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 441212220 is about 21005.0522493994. The cubic root of 441212220 is about 761.2883388037.

Adding to 441212220 its reverse (22212144), we get a palindrome (463424364).

The spelling of 441212220 in words is "four hundred forty-one million, two hundred twelve thousand, two hundred twenty".