12103031122101 has 6 divisors (see below), whose sum is σ = 17482156065270. Its totient is φ = 8068687414728.

The previous prime is 12103031122079. The next prime is 12103031122103. The reversal of 12103031122101 is 10122113030121.

It can be written as a sum of positive squares in only one way, i.e., 7506509519601 + 4596521602500 = 2739801^2 + 2143950^2 .

It is not a de Polignac number, because 12103031122101 - 2⁹ = 12103031121589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103031122103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 672390617886 + ... + 672390617903.

It is an arithmetic number, because the mean of its divisors is an integer number (2913692677545).

Almost surely, 2^{12103031122101} is an apocalyptic number.

It is an amenable number.

12103031122101 is a deficient number, since it is larger than the sum of its proper divisors (5379124943169).

12103031122101 is a wasteful number, since it uses less digits than its factorization.

12103031122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344781235795 (or 1344781235792 counting only the distinct ones).

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

Adding to 12103031122101 its reverse (10122113030121), we get a palindrome (22225144152222).

The spelling of 12103031122101 in words is "twelve trillion, one hundred three billion, thirty-one million, one hundred twenty-two thousand, one hundred one".