11000003123 has 4 divisors (see below), whose sum is σ = 11000667888. Its totient is φ = 10999338360.

The previous prime is 11000003111. The next prime is 11000003159. The reversal of 11000003123 is 32130000011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32130000011 = 41467 ⋅774833.

It is a cyclic number.

It is not a de Polignac number, because 11000003123 - 2¹⁶ = 10999937587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11000003173) 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, 306911 + ... + 340872.

It is an arithmetic number, because the mean of its divisors is an integer number (2750166972).

Almost surely, 2^11000003123 is an apocalyptic number.

11000003123 is a deficient number, since it is larger than the sum of its proper divisors (664765).

11000003123 is an equidigital number, since it uses as much as digits as its factorization.

11000003123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664764.

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 11000003123 its reverse (32130000011), we get a palindrome (43130003134).

The spelling of 11000003123 in words is "eleven billion, three thousand, one hundred twenty-three".