1224120109 has 2 divisors, whose sum is σ = 1224120110. Its totient is φ = 1224120108.

The previous prime is 1224120077. The next prime is 1224120113. The reversal of 1224120109 is 9010214221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1216474884 + 7645225 = 34878^2 + 2765^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224120109 - 2⁵ = 1224120077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1224120109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1224120409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612060054 + 612060055.

It is an arithmetic number, because the mean of its divisors is an integer number (612060055).

Almost surely, 2^1224120109 is an apocalyptic number.

It is an amenable number.

1224120109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224120109 is an equidigital number, since it uses as much as digits as its factorization.

1224120109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1224120109 is about 34987.4278705937. The cubic root of 1224120109 is about 1069.7312362502.

The spelling of 1224120109 in words is "one billion, two hundred twenty-four million, one hundred twenty thousand, one hundred nine".