210043220 has 12 divisors (see below), whose sum is σ = 441090804. Its totient is φ = 84017280.

The previous prime is 210043219. The next prime is 210043231. The reversal of 210043220 is 22340012.

It can be written as a sum of positive squares in 2 ways, for example, as 34904464 + 175138756 = 5908^2 + 13234^2 .

It is a junction number, because it is equal to n+sod(n) for n = 210043195 and 210043204.

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, 5251061 + ... + 5251100.

It is an arithmetic number, because the mean of its divisors is an integer number (36757567).

Almost surely, 2^210043220 is an apocalyptic number.

210043220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210043220 is an abundant number, since it is smaller than the sum of its proper divisors (231047584).

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

210043220 is a wasteful number, since it uses less digits than its factorization.

210043220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10502170 (or 10502168 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 210043220 is about 14492.8679011437. The cubic root of 210043220 is about 594.4329696707.

Adding to 210043220 its reverse (22340012), we get a palindrome (232383232).

The spelling of 210043220 in words is "two hundred ten million, forty-three thousand, two hundred twenty".