210012210 has 64 divisors (see below), whose sum is σ = 561427200. Its totient is φ = 55863936.

The previous prime is 210012193. The next prime is 210012223. The reversal of 210012210 is 12210012.

It is a Harshad number since it is a multiple of its sum of digits (9).

210012210 is a modest number, since divided by 12210 gives 210 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 210012192 and 210012201.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 152947 + ... + 154313.

It is an arithmetic number, because the mean of its divisors is an integer number (8772300).

Almost surely, 2^210012210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210012210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280713600).

210012210 is an abundant number, since it is smaller than the sum of its proper divisors (351414990).

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

210012210 is a wasteful number, since it uses less digits than its factorization.

210012210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952 (or 1946 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 210012210 is about 14491.7980250899. The cubic root of 210012210 is about 594.4037149399.

Adding to 210012210 its reverse (12210012), we get a palindrome (222222222).

The spelling of 210012210 in words is "two hundred ten million, twelve thousand, two hundred ten".