12210210 has 64 divisors (see below), whose sum is σ = 33384960. Its totient is φ = 3173760.

The previous prime is 12210203. The next prime is 12210221. The reversal of 12210210 is 1201221.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12210192 and 12210201.

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, 10519 + ... + 11621.

It is an arithmetic number, because the mean of its divisors is an integer number (521640).

Almost surely, 2^12210210 is an apocalyptic number.

12210210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12210210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16692480).

12210210 is an abundant number, since it is smaller than the sum of its proper divisors (21174750).

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

12210210 is a wasteful number, since it uses less digits than its factorization.

12210210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160 (or 1154 counting only the distinct ones).

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

The square root of 12210210 is about 3494.3110909019. The cubic root of 12210210 is about 230.2719530469.

Adding to 12210210 its reverse (1201221), we get a palindrome (13411431).

The spelling of 12210210 in words is "twelve million, two hundred ten thousand, two hundred ten".