12221246 has 4 divisors (see below), whose sum is σ = 18331872. Its totient is φ = 6110622.

The previous prime is 12221243. The next prime is 12221263. The reversal of 12221246 is 64212221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64212221 = 257 ⋅249853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3055310 + ... + 3055313.

It is an arithmetic number, because the mean of its divisors is an integer number (4582968).

Almost surely, 2^12221246 is an apocalyptic number.

12221246 is a deficient number, since it is larger than the sum of its proper divisors (6110626).

12221246 is an equidigital number, since it uses as much as digits as its factorization.

12221246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6110625.

The product of its digits is 384, while the sum is 20.

The square root of 12221246 is about 3495.8898724073. The cubic root of 12221246 is about 230.3413080110.

Adding to 12221246 its reverse (64212221), we get a palindrome (76433467).

The spelling of 12221246 in words is "twelve million, two hundred twenty-one thousand, two hundred forty-six".