2011123103103 has 6 divisors (see below), whose sum is σ = 2904955593384. Its totient is φ = 1340748735396.

The previous prime is 2011123103083. The next prime is 2011123103107. The reversal of 2011123103103 is 3013013211102.

2011123103103 is a `hidden beast` number, since 20 + 11 + 12 + 310 + 310 + 3 = 666.

It is not a de Polignac number, because 2011123103103 - 2¹⁴ = 2011123086719 is a prime.

It is a super-2 number, since 2×2011123103103² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011123103107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111729061275 + ... + 111729061292.

It is an arithmetic number, because the mean of its divisors is an integer number (484159265564).

Almost surely, 2^{2011123103103} is an apocalyptic number.

2011123103103 is a deficient number, since it is larger than the sum of its proper divisors (893832490281).

2011123103103 is a wasteful number, since it uses less digits than its factorization.

2011123103103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223458122573 (or 223458122570 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 2011123103103 its reverse (3013013211102), we get a palindrome (5024136314205).

The spelling of 2011123103103 in words is "two trillion, eleven billion, one hundred twenty-three million, one hundred three thousand, one hundred three".