1220430109 has 2 divisors, whose sum is σ = 1220430110. Its totient is φ = 1220430108.

The previous prime is 1220430083. The next prime is 1220430131. The reversal of 1220430109 is 9010340221.

It is an a-pointer prime, because the next prime (1220430131) can be obtained adding 1220430109 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1011049209 + 209380900 = 31797^2 + 14470^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220430109 - 2⁷ = 1220429981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1220430109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220430139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610215054 + 610215055.

It is an arithmetic number, because the mean of its divisors is an integer number (610215055).

Almost surely, 2^1220430109 is an apocalyptic number.

It is an amenable number.

1220430109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220430109 is an equidigital number, since it uses as much as digits as its factorization.

1220430109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1220430109 is about 34934.6548430065. The cubic root of 1220430109 is about 1068.6552848636.

The spelling of 1220430109 in words is "one billion, two hundred twenty million, four hundred thirty thousand, one hundred nine".