12231321210 has 24 divisors (see below), whose sum is σ = 31801435380. Its totient is φ = 3261685632.

The previous prime is 12231321181. The next prime is 12231321227. The reversal of 12231321210 is 1212313221.

12231321210 is a `hidden beast` number, since 122 + 313 + 21 + 210 = 666.

12231321210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12214007289 + 17313921 = 110517^2 + 4161^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67951695 + ... + 67951874.

Almost surely, 2^12231321210 is an apocalyptic number.

12231321210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12231321210 is an abundant number, since it is smaller than the sum of its proper divisors (19570114170).

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

12231321210 is a wasteful number, since it uses less digits than its factorization.

12231321210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135903582 (or 135903579 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12231321210 its reverse (1212313221), we get a palindrome (13443634431).

The spelling of 12231321210 in words is "twelve billion, two hundred thirty-one million, three hundred twenty-one thousand, two hundred ten".