4431212220 has 48 divisors (see below), whose sum is σ = 12411066528. Its totient is φ = 1181306880.

The previous prime is 4431212179. The next prime is 4431212239. The reversal of 4431212220 is 222121344.

It is a congruent number.

It is an unprimeable number.

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, 241780 + ... + 259460.

It is an arithmetic number, because the mean of its divisors is an integer number (258563886).

Almost surely, 2^4431212220 is an apocalyptic number.

It is an amenable number.

4431212220 is an abundant number, since it is smaller than the sum of its proper divisors (7979854308).

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

4431212220 is a wasteful number, since it uses less digits than its factorization.

4431212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21870 (or 21868 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 4431212220 is about 66567.3510063304. The cubic root of 4431212220 is about 1642.5080873182.

Adding to 4431212220 its reverse (222121344), we get a palindrome (4653333564).

The spelling of 4431212220 in words is "four billion, four hundred thirty-one million, two hundred twelve thousand, two hundred twenty".