12221459 has 2 divisors, whose sum is σ = 12221460. Its totient is φ = 12221458.

The previous prime is 12221449. The next prime is 12221483. The reversal of 12221459 is 95412221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12221459 - 2⁸ = 12221203 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12221449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110729 + 6110730.

It is an arithmetic number, because the mean of its divisors is an integer number (6110730).

Almost surely, 2^12221459 is an apocalyptic number.

12221459 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221459 is an equidigital number, since it uses as much as digits as its factorization.

12221459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 26.

The square root of 12221459 is about 3495.9203366210. The cubic root of 12221459 is about 230.3426461837.

The spelling of 12221459 in words is "twelve million, two hundred twenty-one thousand, four hundred fifty-nine".