12103213121332 has 6 divisors (see below), whose sum is σ = 21180622962338. Its totient is φ = 6051606560664.

The previous prime is 12103213121317. The next prime is 12103213121339. The reversal of 12103213121332 is 23312131230121.

It can be written as a sum of positive squares in only one way, i.e., 12082395248676 + 20817872656 = 3475974^2 + 144284^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12103213121297 and 12103213121306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103213121339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1512901640163 + ... + 1512901640170.

Almost surely, 2^{12103213121332} is an apocalyptic number.

It is an amenable number.

12103213121332 is a deficient number, since it is larger than the sum of its proper divisors (9077409841006).

12103213121332 is a wasteful number, since it uses less digits than its factorization.

12103213121332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3025803280337 (or 3025803280335 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 12103213121332 its reverse (23312131230121), we get a palindrome (35415344351453).

The spelling of 12103213121332 in words is "twelve trillion, one hundred three billion, two hundred thirteen million, one hundred twenty-one thousand, three hundred thirty-two".