12213132312 has 32 divisors (see below), whose sum is σ = 30566548800. Its totient is φ = 4066548384.

The previous prime is 12213132311. The next prime is 12213132329. The reversal of 12213132312 is 21323131221.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213132311) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 258762 + ... + 302297.

It is an arithmetic number, because the mean of its divisors is an integer number (955204650).

Almost surely, 2^12213132312 is an apocalyptic number.

12213132312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12213132312 is an abundant number, since it is smaller than the sum of its proper divisors (18353416488).

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

12213132312 is a wasteful number, since it uses less digits than its factorization.

12213132312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561975 (or 561971 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

Adding to 12213132312 its reverse (21323131221), we get a palindrome (33536263533).

The spelling of 12213132312 in words is "twelve billion, two hundred thirteen million, one hundred thirty-two thousand, three hundred twelve".