12221107 has 2 divisors, whose sum is σ = 12221108. Its totient is φ = 12221106.

The previous prime is 12221089. The next prime is 12221117. The reversal of 12221107 is 70112221.

It is a strong prime.

It is an emirp because it is prime and its reverse (70112221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12221107 - 2⁷ = 12220979 is a prime.

It is not a weakly prime, because it can be changed into another prime (12221117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110553 + 6110554.

It is an arithmetic number, because the mean of its divisors is an integer number (6110554).

Almost surely, 2^12221107 is an apocalyptic number.

12221107 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221107 is an equidigital number, since it uses as much as digits as its factorization.

12221107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 12221107 is about 3495.8699918618. The cubic root of 12221107 is about 230.3404347350.

Adding to 12221107 its reverse (70112221), we get a palindrome (82333328).

The spelling of 12221107 in words is "twelve million, two hundred twenty-one thousand, one hundred seven".