1220116203 has 10 divisors (see below), whose sum is σ = 1822642844. Its totient is φ = 813410748.

The previous prime is 1220116201. The next prime is 1220116207. The reversal of 1220116203 is 3026110221.

1220116203 is a `hidden beast` number, since 12 + 20 + 11 + 620 + 3 = 666.

It is not a de Polignac number, because 1220116203 - 2¹ = 1220116201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220116201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7531501 + ... + 7531662.

Almost surely, 2^1220116203 is an apocalyptic number.

1220116203 is a deficient number, since it is larger than the sum of its proper divisors (602526641).

1220116203 is an equidigital number, since it uses as much as digits as its factorization.

1220116203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15063175 (or 15063166 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1220116203 is about 34930.1617946439. The cubic root of 1220116203 is about 1068.5636543069.

Adding to 1220116203 its reverse (3026110221), we get a palindrome (4246226424).

The spelling of 1220116203 in words is "one billion, two hundred twenty million, one hundred sixteen thousand, two hundred three".