12321210 has 32 divisors (see below), whose sum is σ = 32260032. Its totient is φ = 2986880.

The previous prime is 12321193. The next prime is 12321223. The reversal of 12321210 is 1212321.

12321210 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18339 + ... + 18998.

It is an arithmetic number, because the mean of its divisors is an integer number (1008126).

Almost surely, 2^12321210 is an apocalyptic number.

12321210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12321210 is an abundant number, since it is smaller than the sum of its proper divisors (19938822).

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

12321210 is a wasteful number, since it uses less digits than its factorization.

12321210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37358.

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

The square root of 12321210 is about 3510.1581160968. The cubic root of 12321210 is about 230.9676310036.

Adding to 12321210 its reverse (1212321), we get a palindrome (13533531).

Subtracting from 12321210 its reverse (1212321), we obtain a square (11108889 = 3333²).

It can be divided in two parts, 1232 and 1210, that added together give a palindrome (2442).

The spelling of 12321210 in words is "twelve million, three hundred twenty-one thousand, two hundred ten".