12213546 has 8 divisors (see below), whose sum is σ = 24427104. Its totient is φ = 4071180.

The previous prime is 12213541. The next prime is 12213571. The reversal of 12213546 is 64531221.

It is a sphenic number, since it is the product of 3 distinct primes.

12213546 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (12213541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1017790 + ... + 1017801.

It is an arithmetic number, because the mean of its divisors is an integer number (3053388).

Almost surely, 2^12213546 is an apocalyptic number.

12213546 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12213546 is a wasteful number, since it uses less digits than its factorization.

12213546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2035596.

The product of its digits is 1440, while the sum is 24.

The square root of 12213546 is about 3494.7884056120. The cubic root of 12213546 is about 230.2929223092.

Adding to 12213546 its reverse (64531221), we get a palindrome (76744767).

The spelling of 12213546 in words is "twelve million, two hundred thirteen thousand, five hundred forty-six".