12131223210 has 48 divisors (see below), whose sum is σ = 32274706464. Its totient is φ = 3159759456.

The previous prime is 12131223199. The next prime is 12131223241. The reversal of 12131223210 is 1232213121.

12131223210 is a `hidden beast` number, since 121 + 312 + 23 + 210 = 666.

12131223210 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

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 23 ways as a sum of consecutive naturals, for example, 1563472 + ... + 1571211.

It is an arithmetic number, because the mean of its divisors is an integer number (672389718).

Almost surely, 2^12131223210 is an apocalyptic number.

12131223210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12131223210 is an abundant number, since it is smaller than the sum of its proper divisors (20143483254).

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

12131223210 is a wasteful number, since it uses less digits than its factorization.

12131223210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3134739 (or 3134736 counting only the distinct ones).

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

Adding to 12131223210 its reverse (1232213121), we get a palindrome (13363436331).

The spelling of 12131223210 in words is "twelve billion, one hundred thirty-one million, two hundred twenty-three thousand, two hundred ten".