12221467 has 4 divisors (see below), whose sum is σ = 12255136. Its totient is φ = 12187800.

The previous prime is 12221459. The next prime is 12221483. The reversal of 12221467 is 76412221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12221467 - 2³ = 12221459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16284 + ... + 17017.

It is an arithmetic number, because the mean of its divisors is an integer number (3063784).

Almost surely, 2^12221467 is an apocalyptic number.

12221467 is a deficient number, since it is larger than the sum of its proper divisors (33669).

12221467 is an equidigital number, since it uses as much as digits as its factorization.

12221467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33668.

The product of its digits is 1344, while the sum is 25.

The square root of 12221467 is about 3495.9214808116. The cubic root of 12221467 is about 230.3426964434.

Adding to 12221467 its reverse (76412221), we get a palindrome (88633688).

The spelling of 12221467 in words is "twelve million, two hundred twenty-one thousand, four hundred sixty-seven".