11111203113203 has 4 divisors (see below), whose sum is σ = 11115461913480. Its totient is φ = 11106944312928.

The previous prime is 11111203113181. The next prime is 11111203113229. The reversal of 11111203113203 is 30231130211111.

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 11111203113203 - 2¹² = 11111203109107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11111203113503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2129396225 + ... + 2129401442.

It is an arithmetic number, because the mean of its divisors is an integer number (2778865478370).

Almost surely, 2^{11111203113203} is an apocalyptic number.

11111203113203 is a deficient number, since it is larger than the sum of its proper divisors (4258800277).

11111203113203 is an equidigital number, since it uses as much as digits as its factorization.

11111203113203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4258800276.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 11111203113203 its reverse (30231130211111), we get a palindrome (41342333324314).

The spelling of 11111203113203 in words is "eleven trillion, one hundred eleven billion, two hundred three million, one hundred thirteen thousand, two hundred three".