210434221 has 8 divisors (see below), whose sum is σ = 215361504. Its totient is φ = 205542480.

The previous prime is 210434171. The next prime is 210434227. The reversal of 210434221 is 122434012.

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

It is not a de Polignac number, because 210434221 - 2⁷ = 210434093 is a prime.

It is a super-2 number, since 2×210434221² = 88565122735753682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210434227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3286 + ... + 20776.

It is an arithmetic number, because the mean of its divisors is an integer number (26920188).

Almost surely, 2^210434221 is an apocalyptic number.

It is an amenable number.

210434221 is a deficient number, since it is larger than the sum of its proper divisors (4927283).

210434221 is a wasteful number, since it uses less digits than its factorization.

210434221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17771.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 210434221 is about 14506.3510573817. The cubic root of 210434221 is about 594.8015919214.

Adding to 210434221 its reverse (122434012), we get a palindrome (332868233).

The spelling of 210434221 in words is "two hundred ten million, four hundred thirty-four thousand, two hundred twenty-one".