123103111212321 has 4 divisors (see below), whose sum is σ = 164137481616432. Its totient is φ = 82068740808212.

The previous prime is 123103111212293. The next prime is 123103111212383. The reversal of 123103111212321 is 123212111301321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123103111212321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123103111212291 and 123103111212300.

It is not an unprimeable number, because it can be changed into a prime (123103111212421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20517185202051 + ... + 20517185202056.

It is an arithmetic number, because the mean of its divisors is an integer number (41034370404108).

Almost surely, 2^{123103111212321} is an apocalyptic number.

It is an amenable number.

123103111212321 is a deficient number, since it is larger than the sum of its proper divisors (41034370404111).

123103111212321 is an equidigital number, since it uses as much as digits as its factorization.

123103111212321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41034370404110.

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 123103111212321 its reverse (123212111301321), we get a palindrome (246315222513642).

The spelling of 123103111212321 in words is "one hundred twenty-three trillion, one hundred three billion, one hundred eleven million, two hundred twelve thousand, three hundred twenty-one".