2011200323123 has 4 divisors (see below), whose sum is σ = 2011205427600. Its totient is φ = 2011195218648.

The previous prime is 2011200323117. The next prime is 2011200323131. The reversal of 2011200323123 is 3213230021102.

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 2011200323123 - 2³⁰ = 2010126581299 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011200323095 and 2011200323104.

It is not an unprimeable number, because it can be changed into a prime (2011200323173) 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, 1906823 + ... + 2767376.

It is an arithmetic number, because the mean of its divisors is an integer number (502801356900).

Almost surely, 2^{2011200323123} is an apocalyptic number.

2011200323123 is a deficient number, since it is larger than the sum of its proper divisors (5104477).

2011200323123 is an equidigital number, since it uses as much as digits as its factorization.

2011200323123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5104476.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 2011200323123 its reverse (3213230021102), we get a palindrome (5224430344225).

The spelling of 2011200323123 in words is "two trillion, eleven billion, two hundred million, three hundred twenty-three thousand, one hundred twenty-three".