11112320203 has 4 divisors (see below), whose sum is σ = 11112578280. Its totient is φ = 11112062128.

The previous prime is 11112320173. The next prime is 11112320227. The reversal of 11112320203 is 30202321111.

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 11112320203 - 2²¹ = 11110223051 is a prime.

It is a super-2 number, since 2×11112320203² (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 (11112320243) 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, 47113 + ... + 156346.

It is an arithmetic number, because the mean of its divisors is an integer number (2778144570).

Almost surely, 2^11112320203 is an apocalyptic number.

11112320203 is a deficient number, since it is larger than the sum of its proper divisors (258077).

11112320203 is an equidigital number, since it uses as much as digits as its factorization.

11112320203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258076.

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

Adding to 11112320203 its reverse (30202321111), we get a palindrome (41314641314).

The spelling of 11112320203 in words is "eleven billion, one hundred twelve million, three hundred twenty thousand, two hundred three".