12213210 has 32 divisors (see below), whose sum is σ = 29411712. Its totient is φ = 3245760.

The previous prime is 12213199. The next prime is 12213221. The reversal of 12213210 is 1231221.

It is an interprime number because it is at equal distance from previous prime (12213199) and next prime (12213221).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12147 + ... + 13113.

It is an arithmetic number, because the mean of its divisors is an integer number (919116).

Almost surely, 2^12213210 is an apocalyptic number.

12213210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12213210 is an abundant number, since it is smaller than the sum of its proper divisors (17198502).

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

12213210 is a wasteful number, since it uses less digits than its factorization.

12213210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 12213210 is about 3494.7403337015. The cubic root of 12213210 is about 230.2908104701.

Adding to 12213210 its reverse (1231221), we get a palindrome (13444431).

The spelling of 12213210 in words is "twelve million, two hundred thirteen thousand, two hundred ten".