3121200100123 has 12 divisors (see below), whose sum is σ = 3631447743552. Its totient is φ = 2674825142640.

The previous prime is 3121200100061. The next prime is 3121200100141. The reversal of 3121200100123 is 3210010021213.

It is a de Polignac number, because none of the positive numbers 2^k-3121200100123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3121200100097 and 3121200100106.

It is not an unprimeable number, because it can be changed into a prime (3121200100423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5553340 + ... + 6089497.

It is an arithmetic number, because the mean of its divisors is an integer number (302620645296).

Almost surely, 2^{3121200100123} is an apocalyptic number.

3121200100123 is a deficient number, since it is larger than the sum of its proper divisors (510247643429).

3121200100123 is a wasteful number, since it uses less digits than its factorization.

3121200100123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11648322 (or 11648315 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 3121200100123 its reverse (3210010021213), we get a palindrome (6331210121336).

The spelling of 3121200100123 in words is "three trillion, one hundred twenty-one billion, two hundred million, one hundred thousand, one hundred twenty-three".