12123404452231 has 8 divisors (see below), whose sum is σ = 12200956480944. Its totient is φ = 12046014160320.

The previous prime is 12123404452219. The next prime is 12123404452331. The reversal of 12123404452231 is 13225440432121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12123404452231 - 2⁴¹ = 9924381196679 is a prime.

It is a super-2 number, since 2×12123404452231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123404452331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40283805 + ... + 40583638.

It is an arithmetic number, because the mean of its divisors is an integer number (1525119560118).

Almost surely, 2^{12123404452231} is an apocalyptic number.

12123404452231 is a deficient number, since it is larger than the sum of its proper divisors (77552028713).

12123404452231 is an equidigital number, since it uses as much as digits as its factorization.

12123404452231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80868401.

The product of its (nonzero) digits is 46080, while the sum is 34.

Adding to 12123404452231 its reverse (13225440432121), we get a palindrome (25348844884352).

The spelling of 12123404452231 in words is "twelve trillion, one hundred twenty-three billion, four hundred four million, four hundred fifty-two thousand, two hundred thirty-one".