12221046 has 24 divisors (see below), whose sum is σ = 26633880. Its totient is φ = 4049856.

The previous prime is 12221039. The next prime is 12221057. The reversal of 12221046 is 64012221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1326 + ... + 5118.

It is an arithmetic number, because the mean of its divisors is an integer number (1109745).

Almost surely, 2^12221046 is an apocalyptic number.

12221046 is an abundant number, since it is smaller than the sum of its proper divisors (14412834).

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

12221046 is a wasteful number, since it uses less digits than its factorization.

12221046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3980 (or 3977 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 12221046 is about 3495.8612672702. The cubic root of 12221046 is about 230.3400514966.

Adding to 12221046 its reverse (64012221), we get a palindrome (76233267).

The spelling of 12221046 in words is "twelve million, two hundred twenty-one thousand, forty-six".