201220221303 has 10 divisors (see below), whose sum is σ = 300588231944. Its totient is φ = 134146814148.

The previous prime is 201220221289. The next prime is 201220221329. The reversal of 201220221303 is 303122022102.

201220221303 is a `hidden beast` number, since 20 + 122 + 0 + 221 + 303 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-201220221303 is a prime.

It is a super-2 number, since 2×201220221303² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201220221383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1242100051 + ... + 1242100212.

Almost surely, 2^201220221303 is an apocalyptic number.

201220221303 is a deficient number, since it is larger than the sum of its proper divisors (99368010641).

201220221303 is an equidigital number, since it uses as much as digits as its factorization.

201220221303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2484200275 (or 2484200266 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 201220221303 its reverse (303122022102), we get a palindrome (504342243405).

The spelling of 201220221303 in words is "two hundred one billion, two hundred twenty million, two hundred twenty-one thousand, three hundred three".