11011111020103 has 4 divisors (see below), whose sum is σ = 11191621036888. Its totient is φ = 10830601003320.

The previous prime is 11011111020083. The next prime is 11011111020109. The reversal of 11011111020103 is 30102011111011.

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

It is not a de Polignac number, because 11011111020103 - 2²¹ = 11011108922951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011111020109) 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, 90255008301 + ... + 90255008422.

It is an arithmetic number, because the mean of its divisors is an integer number (2797905259222).

Almost surely, 2^{11011111020103} is an apocalyptic number.

11011111020103 is a deficient number, since it is larger than the sum of its proper divisors (180510016785).

11011111020103 is an equidigital number, since it uses as much as digits as its factorization.

11011111020103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180510016784.

The product of its (nonzero) digits is 6, while the sum is 13.

Adding to 11011111020103 its reverse (30102011111011), we get a palindrome (41113122131114).

The spelling of 11011111020103 in words is "eleven trillion, eleven billion, one hundred eleven million, twenty thousand, one hundred three".