1220455303 has 2 divisors, whose sum is σ = 1220455304. Its totient is φ = 1220455302.

The previous prime is 1220455267. The next prime is 1220455349. The reversal of 1220455303 is 3035540221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220455303 - 2⁹ = 1220454791 is a prime.

It is a super-3 number, since 3×1220455303³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220455363) 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 as a sum of consecutive naturals, namely, 610227651 + 610227652.

It is an arithmetic number, because the mean of its divisors is an integer number (610227652).

Almost surely, 2^1220455303 is an apocalyptic number.

1220455303 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220455303 is an equidigital number, since it uses as much as digits as its factorization.

1220455303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 1220455303 is about 34935.0154286498. The cubic root of 1220455303 is about 1068.6626384230.

Adding to 1220455303 its reverse (3035540221), we get a palindrome (4255995524).

The spelling of 1220455303 in words is "one billion, two hundred twenty million, four hundred fifty-five thousand, three hundred three".