12221846 has 16 divisors (see below), whose sum is σ = 22563744. Its totient is φ = 4834944.

The previous prime is 12221837. The next prime is 12221849. The reversal of 12221846 is 64812221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33395 + ... + 33758.

It is an arithmetic number, because the mean of its divisors is an integer number (1410234).

Almost surely, 2^12221846 is an apocalyptic number.

12221846 is a deficient number, since it is larger than the sum of its proper divisors (10341898).

12221846 is a wasteful number, since it uses less digits than its factorization.

12221846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67175.

The product of its digits is 1536, while the sum is 26.

The square root of 12221846 is about 3495.9756864143. The cubic root of 12221846 is about 230.3450774718.

The spelling of 12221846 in words is "twelve million, two hundred twenty-one thousand, eight hundred forty-six".