1220003203 has 2 divisors, whose sum is σ = 1220003204. Its totient is φ = 1220003202.

The previous prime is 1220003177. The next prime is 1220003231. The reversal of 1220003203 is 3023000221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220003203 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220003263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610001601 + 610001602.

It is an arithmetic number, because the mean of its divisors is an integer number (610001602).

Almost surely, 2^1220003203 is an apocalyptic number.

1220003203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220003203 is an equidigital number, since it uses as much as digits as its factorization.

1220003203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 1220003203 is about 34928.5442439275. The cubic root of 1220003203 is about 1068.5306652575.

Adding to 1220003203 its reverse (3023000221), we get a palindrome (4243003424).

The spelling of 1220003203 in words is "one billion, two hundred twenty million, three thousand, two hundred three".