1220403442393 has 2 divisors, whose sum is σ = 1220403442394. Its totient is φ = 1220403442392.

The previous prime is 1220403442333. The next prime is 1220403442421. The reversal of 1220403442393 is 3932443040221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1032526273689 + 187877168704 = 1016133^2 + 433448^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220403442393 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220403442333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610201721196 + 610201721197.

It is an arithmetic number, because the mean of its divisors is an integer number (610201721197).

Almost surely, 2^{1220403442393} is an apocalyptic number.

It is an amenable number.

1220403442393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220403442393 is an equidigital number, since it uses as much as digits as its factorization.

1220403442393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 37.

The spelling of 1220403442393 in words is "one trillion, two hundred twenty billion, four hundred three million, four hundred forty-two thousand, three hundred ninety-three".