2103120200123 has 4 divisors (see below), whose sum is σ = 2194560208848. Its totient is φ = 2011680191400.

The previous prime is 2103120200047. The next prime is 2103120200143. The reversal of 2103120200123 is 3210020213012.

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 2103120200123 - 2¹⁶ = 2103120134587 is a prime.

It is a super-2 number, since 2×2103120200123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2103120200143) 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, 45720004328 + ... + 45720004373.

It is an arithmetic number, because the mean of its divisors is an integer number (548640052212).

Almost surely, 2^{2103120200123} is an apocalyptic number.

2103120200123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2103120200123 is a deficient number, since it is larger than the sum of its proper divisors (91440008725).

2103120200123 is an equidigital number, since it uses as much as digits as its factorization.

2103120200123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91440008724.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 2103120200123 its reverse (3210020213012), we get a palindrome (5313140413135).

The spelling of 2103120200123 in words is "two trillion, one hundred three billion, one hundred twenty million, two hundred thousand, one hundred twenty-three".