12103112030121 has 48 divisors (see below), whose sum is σ = 20866863276480. Its totient is φ = 6913115475840.

The previous prime is 12103112030081. The next prime is 12103112030129. The reversal of 12103112030121 is 12103021130121.

12103112030121 is a `hidden beast` number, since 1 + 2 + 10 + 311 + 20 + 301 + 21 = 666.

It is not a de Polignac number, because 12103112030121 - 2⁷ = 12103112029993 is a prime.

It is a super-2 number, since 2×12103112030121² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12103112030094 and 12103112030103.

It is not an unprimeable number, because it can be changed into a prime (12103112030129) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1156161 + ... + 5054001.

It is an arithmetic number, because the mean of its divisors is an integer number (434726318260).

Almost surely, 2^{12103112030121} is an apocalyptic number.

It is an amenable number.

12103112030121 is a deficient number, since it is larger than the sum of its proper divisors (8763751246359).

12103112030121 is a wasteful number, since it uses less digits than its factorization.

12103112030121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3900211 (or 3900198 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 12103112030121 its reverse (12103021130121), we get a palindrome (24206133160242).

The spelling of 12103112030121 in words is "twelve trillion, one hundred three billion, one hundred twelve million, thirty thousand, one hundred twenty-one".