12213506328 has 32 divisors (see below), whose sum is σ = 30753441600. Its totient is φ = 4041878688.

The previous prime is 12213506321. The next prime is 12213506369. The reversal of 12213506328 is 82360531221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213506321) 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, 1827226 + ... + 1833897.

It is an arithmetic number, because the mean of its divisors is an integer number (961045050).

Almost surely, 2^12213506328 is an apocalyptic number.

It is an amenable number.

12213506328 is an abundant number, since it is smaller than the sum of its proper divisors (18539935272).

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

12213506328 is a wasteful number, since it uses less digits than its factorization.

12213506328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3661271 (or 3661267 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 12213506328 in words is "twelve billion, two hundred thirteen million, five hundred six thousand, three hundred twenty-eight".