12123301321 has 4 divisors (see below), whose sum is σ = 12134293632. Its totient is φ = 12112309012.

The previous prime is 12123301313. The next prime is 12123301339. The reversal of 12123301321 is 12310332121.

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 not a de Polignac number, because 12123301321 - 2³ = 12123301313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12123301361) 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, 5494501 + ... + 5496706.

It is an arithmetic number, because the mean of its divisors is an integer number (3033573408).

Almost surely, 2^12123301321 is an apocalyptic number.

It is an amenable number.

12123301321 is a deficient number, since it is larger than the sum of its proper divisors (10992311).

12123301321 is a wasteful number, since it uses less digits than its factorization.

12123301321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10992310.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12123301321 its reverse (12310332121), we get a palindrome (24433633442).

The spelling of 12123301321 in words is "twelve billion, one hundred twenty-three million, three hundred one thousand, three hundred twenty-one".