11320220203 has 4 divisors (see below), whose sum is σ = 11561076000. Its totient is φ = 11079364408.

The previous prime is 11320220167. The next prime is 11320220213. The reversal of 11320220203 is 30202202311.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11320220203 is a prime.

It is a super-2 number, since 2×11320220203² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11320220213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120427828 + ... + 120427921.

It is an arithmetic number, because the mean of its divisors is an integer number (2890269000).

Almost surely, 2^11320220203 is an apocalyptic number.

11320220203 is a deficient number, since it is larger than the sum of its proper divisors (240855797).

11320220203 is an equidigital number, since it uses as much as digits as its factorization.

11320220203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240855796.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 11320220203 its reverse (30202202311), we get a palindrome (41522422514).

The spelling of 11320220203 in words is "eleven billion, three hundred twenty million, two hundred twenty thousand, two hundred three".