11111122222203 has 4 divisors (see below), whose sum is σ = 14814829629608. Its totient is φ = 7407414814800.

The previous prime is 11111122222181. The next prime is 11111122222241. The reversal of 11111122222203 is 30222222111111.

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

It is not a de Polignac number, because 11111122222203 - 2⁹ = 11111122221691 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11111122222203.

It is not an unprimeable number, because it can be changed into a prime (11111122222253) 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 3 ways as a sum of consecutive naturals, for example, 1851853703698 + ... + 1851853703703.

It is an arithmetic number, because the mean of its divisors is an integer number (3703707407402).

Almost surely, 2^{11111122222203} is an apocalyptic number.

11111122222203 is a deficient number, since it is larger than the sum of its proper divisors (3703707407405).

11111122222203 is an equidigital number, since it uses as much as digits as its factorization.

11111122222203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3703707407404.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 11111122222203 its reverse (30222222111111), we get a palindrome (41333344333314).

The spelling of 11111122222203 in words is "eleven trillion, one hundred eleven billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred three".