2103120012123 has 12 divisors (see below), whose sum is σ = 3271520019040. Its totient is φ = 1294227699696.

The previous prime is 2103120011987. The next prime is 2103120012143. The reversal of 2103120012123 is 3212100213012.

2103120012123 is a `hidden beast` number, since 210 + 312 + 0 + 0 + 121 + 23 = 666.

It is not a de Polignac number, because 2103120012123 - 2²¹ = 2103117914971 is a prime.

It is a super-2 number, since 2×2103120012123² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2103120012096 and 2103120012105.

It is not an unprimeable number, because it can be changed into a prime (2103120012143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8987692243 + ... + 8987692476.

Almost surely, 2^{2103120012123} is an apocalyptic number.

2103120012123 is a deficient number, since it is larger than the sum of its proper divisors (1168400006917).

2103120012123 is a wasteful number, since it uses less digits than its factorization.

2103120012123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17975384738 (or 17975384735 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 2103120012123 its reverse (3212100213012), we get a palindrome (5315220225135).

The spelling of 2103120012123 in words is "two trillion, one hundred three billion, one hundred twenty million, twelve thousand, one hundred twenty-three".