12231113320121 has 4 divisors (see below), whose sum is σ = 12260165846244. Its totient is φ = 12202060794000.

The previous prime is 12231113320109. The next prime is 12231113320171. The reversal of 12231113320121 is 12102331113221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6124461805225 + 6106651514896 = 2474765^2 + 2471164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12231113320121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12231113320171) 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, 14526262430 + ... + 14526263271.

It is an arithmetic number, because the mean of its divisors is an integer number (3065041461561).

Almost surely, 2^{12231113320121} is an apocalyptic number.

It is an amenable number.

12231113320121 is a deficient number, since it is larger than the sum of its proper divisors (29052526123).

12231113320121 is an equidigital number, since it uses as much as digits as its factorization.

12231113320121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29052526122.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 12231113320121 its reverse (12102331113221), we get a palindrome (24333444433342).

The spelling of 12231113320121 in words is "twelve trillion, two hundred thirty-one billion, one hundred thirteen million, three hundred twenty thousand, one hundred twenty-one".