2111003123 has 4 divisors (see below), whose sum is σ = 2139921048. Its totient is φ = 2082085200.

The previous prime is 2111003117. The next prime is 2111003131. The reversal of 2111003123 is 3213001112.

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 2111003123 - 2¹⁰ = 2111002099 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2111003098 and 2111003107.

It is not an unprimeable number, because it can be changed into a prime (2111003723) 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, 14458853 + ... + 14458998.

It is an arithmetic number, because the mean of its divisors is an integer number (534980262).

Almost surely, 2^2111003123 is an apocalyptic number.

2111003123 is a deficient number, since it is larger than the sum of its proper divisors (28917925).

2111003123 is an equidigital number, since it uses as much as digits as its factorization.

2111003123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28917924.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 2111003123 is about 45945.6540164573. The cubic root of 2111003123 is about 1282.8118367701.

Adding to 2111003123 its reverse (3213001112), we get a palindrome (5324004235).

The spelling of 2111003123 in words is "two billion, one hundred eleven million, three thousand, one hundred twenty-three".