1220103203243 has 2 divisors, whose sum is σ = 1220103203244. Its totient is φ = 1220103203242.

The previous prime is 1220103203173. The next prime is 1220103203357. The reversal of 1220103203243 is 3423023010221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220103203243 is a prime.

It is not a weakly prime, because it can be changed into another prime (1720103203243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610051601621 + 610051601622.

It is an arithmetic number, because the mean of its divisors is an integer number (610051601622).

Almost surely, 2^{1220103203243} is an apocalyptic number.

1220103203243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220103203243 is an equidigital number, since it uses as much as digits as its factorization.

1220103203243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 1220103203243 its reverse (3423023010221), we get a palindrome (4643126213464).

The spelling of 1220103203243 in words is "one trillion, two hundred twenty billion, one hundred three million, two hundred three thousand, two hundred forty-three".