12213000312 has 64 divisors (see below), whose sum is σ = 31534479360. Its totient is φ = 3937545600.

The previous prime is 12213000307. The next prime is 12213000313. The reversal of 12213000312 is 21300031221.

It is a junction number, because it is equal to n+sod(n) for n = 12213000291 and 12213000300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213000313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1946893 + ... + 1953155.

It is an arithmetic number, because the mean of its divisors is an integer number (492726240).

Almost surely, 2^12213000312 is an apocalyptic number.

12213000312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12213000312 is an abundant number, since it is smaller than the sum of its proper divisors (19321479048).

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

12213000312 is a wasteful number, since it uses less digits than its factorization.

12213000312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8924 (or 8920 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12213000312 its reverse (21300031221), we get a palindrome (33513031533).

The spelling of 12213000312 in words is "twelve billion, two hundred thirteen million, three hundred twelve", and thus it is an aban number.