12321020210 has 32 divisors (see below), whose sum is σ = 22351956480. Its totient is φ = 4889833408.

The previous prime is 12321020171. The next prime is 12321020251. The reversal of 12321020210 is 1202012321.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 863111 + ... + 877269.

It is an arithmetic number, because the mean of its divisors is an integer number (698498640).

Almost surely, 2^12321020210 is an apocalyptic number.

12321020210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12321020210 is a deficient number, since it is larger than the sum of its proper divisors (10030936270).

12321020210 is a wasteful number, since it uses less digits than its factorization.

12321020210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14842.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12321020210 its reverse (1202012321), we get a palindrome (13523032531).

The spelling of 12321020210 in words is "twelve billion, three hundred twenty-one million, twenty thousand, two hundred ten".