1220103142409 has 4 divisors (see below), whose sum is σ = 1220316564804. Its totient is φ = 1219889720016.

The previous prime is 1220103142351. The next prime is 1220103142417. The reversal of 1220103142409 is 9042413010221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 274486927225 + 945616215184 = 523915^2 + 972428^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220103142409 - 2¹⁶ = 1220103076873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220103642409) 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 in 3 ways as a sum of consecutive naturals, for example, 106702622 + ... + 106714055.

It is an arithmetic number, because the mean of its divisors is an integer number (305079141201).

Almost surely, 2^{1220103142409} is an apocalyptic number.

It is an amenable number.

1220103142409 is a deficient number, since it is larger than the sum of its proper divisors (213422395).

1220103142409 is an equidigital number, since it uses as much as digits as its factorization.

1220103142409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213422394.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 1220103142409 in words is "one trillion, two hundred twenty billion, one hundred three million, one hundred forty-two thousand, four hundred nine".