1220211303 has 16 divisors (see below), whose sum is σ = 1671148416. Its totient is φ = 791667360.

The previous prime is 1220211277. The next prime is 1220211313. The reversal of 1220211303 is 3031120221.

It is not a de Polignac number, because 1220211303 - 2⁹ = 1220210791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220211313) 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 15 ways as a sum of consecutive naturals, for example, 19888 + ... + 53253.

It is an arithmetic number, because the mean of its divisors is an integer number (104446776).

Almost surely, 2^1220211303 is an apocalyptic number.

1220211303 is a deficient number, since it is larger than the sum of its proper divisors (450937113).

1220211303 is an equidigital number, since it uses as much as digits as its factorization.

1220211303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73294.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1220211303 is about 34931.5230558302. The cubic root of 1220211303 is about 1068.5914160788.

Adding to 1220211303 its reverse (3031120221), we get a palindrome (4251331524).

The spelling of 1220211303 in words is "one billion, two hundred twenty million, two hundred eleven thousand, three hundred three".