12213031320 has 96 divisors (see below), whose sum is σ = 45362697120. Its totient is φ = 2791549440.

The previous prime is 12213031301. The next prime is 12213031427. The reversal of 12213031320 is 2313031221.

12213031320 is digitally balanced in base 2, because in such base 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 a junction number, because it is equal to n+sod(n) for n = 12213031293 and 12213031302.

It is a congruent number.

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, 2420701 + ... + 2425740.

It is an arithmetic number, because the mean of its divisors is an integer number (472528095).

Almost surely, 2^12213031320 is an apocalyptic number.

12213031320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12213031320 is an abundant number, since it is smaller than the sum of its proper divisors (33149665800).

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

12213031320 is a wasteful number, since it uses less digits than its factorization.

12213031320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4846465 (or 4846458 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12213031320 its reverse (2313031221), we get a palindrome (14526062541).

Subtracting from 12213031320 its reverse (2313031221), we obtain a palindrome (9900000099).

The spelling of 12213031320 in words is "twelve billion, two hundred thirteen million, thirty-one thousand, three hundred twenty".