210216047 has 12 divisors (see below), whose sum is σ = 215506824. Its totient is φ = 205027200.

The previous prime is 210216037. The next prime is 210216059. The reversal of 210216047 is 740612012.

It is not a de Polignac number, because 210216047 - 2¹² = 210211951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210216037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1289588 + ... + 1289750.

It is an arithmetic number, because the mean of its divisors is an integer number (17958902).

Almost surely, 2^210216047 is an apocalyptic number.

210216047 is a deficient number, since it is larger than the sum of its proper divisors (5290777).

210216047 is a wasteful number, since it uses less digits than its factorization.

210216047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490 (or 377 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 210216047 is about 14498.8291596253. The cubic root of 210216047 is about 594.5959613678.

Adding to 210216047 its reverse (740612012), we get a palindrome (950828059).

The spelling of 210216047 in words is "two hundred ten million, two hundred sixteen thousand, forty-seven".