12103031023121 has 16 divisors (see below), whose sum is σ = 12811900738560. Its totient is φ = 11413611175680.

The previous prime is 12103031023081. The next prime is 12103031023157. The reversal of 12103031023121 is 12132013030121.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12103031023121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12103031023093 and 12103031023102.

It is not an unprimeable number, because it can be changed into a prime (12103031223121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54059216 + ... + 54282638.

It is an arithmetic number, because the mean of its divisors is an integer number (800743796160).

Almost surely, 2^{12103031023121} is an apocalyptic number.

It is an amenable number.

12103031023121 is a deficient number, since it is larger than the sum of its proper divisors (708869715439).

12103031023121 is a wasteful number, since it uses less digits than its factorization.

12103031023121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266936.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 12103031023121 its reverse (12132013030121), we get a palindrome (24235044053242).

The spelling of 12103031023121 in words is "twelve trillion, one hundred three billion, thirty-one million, twenty-three thousand, one hundred twenty-one".