1220012303 has 4 divisors (see below), whose sum is σ = 1227783240. Its totient is φ = 1212241368.

The previous prime is 1220012291. The next prime is 1220012329. The reversal of 1220012303 is 3032100221.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1220012303 - 2¹⁴ = 1219995919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220012333) 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, 3885233 + ... + 3885546.

It is an arithmetic number, because the mean of its divisors is an integer number (306945810).

Almost surely, 2^1220012303 is an apocalyptic number.

1220012303 is a deficient number, since it is larger than the sum of its proper divisors (7770937).

1220012303 is an equidigital number, since it uses as much as digits as its factorization.

1220012303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7770936.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1220012303 is about 34928.6745096346. The cubic root of 1220012303 is about 1068.5333219732.

Adding to 1220012303 its reverse (3032100221), we get a palindrome (4252112524).

The spelling of 1220012303 in words is "one billion, two hundred twenty million, twelve thousand, three hundred three".