11303220203 has 12 divisors (see below), whose sum is σ = 12426855000. Its totient is φ = 10273459680.

The previous prime is 11303220199. The next prime is 11303220277. The reversal of 11303220203 is 30202230311.

It is not a de Polignac number, because 11303220203 - 2² = 11303220199 is a prime.

It is a super-2 number, since 2×11303220203² (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 (11303225203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 901151 + ... + 913607.

It is an arithmetic number, because the mean of its divisors is an integer number (1035571250).

Almost surely, 2^11303220203 is an apocalyptic number.

11303220203 is a deficient number, since it is larger than the sum of its proper divisors (1123634797).

11303220203 is a wasteful number, since it uses less digits than its factorization.

11303220203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19978 (or 19967 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 11303220203 its reverse (30202230311), we get a palindrome (41505450514).

The spelling of 11303220203 in words is "eleven billion, three hundred three million, two hundred twenty thousand, two hundred three".