11220311203 has 4 divisors (see below), whose sum is σ = 11238981208. Its totient is φ = 11201641200.

The previous prime is 11220311197. The next prime is 11220311233. The reversal of 11220311203 is 30211302211.

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 11220311203 - 2⁹ = 11220310691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11220311233) 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, 9334101 + ... + 9335302.

It is an arithmetic number, because the mean of its divisors is an integer number (2809745302).

Almost surely, 2^11220311203 is an apocalyptic number.

11220311203 is a deficient number, since it is larger than the sum of its proper divisors (18670005).

11220311203 is an equidigital number, since it uses as much as digits as its factorization.

11220311203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18670004.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11220311203 its reverse (30211302211), we get a palindrome (41431613414).

The spelling of 11220311203 in words is "eleven billion, two hundred twenty million, three hundred eleven thousand, two hundred three".