12123001323 has 10 divisors (see below), whose sum is σ = 18109668764. Its totient is φ = 8082000828.

The previous prime is 12123001321. The next prime is 12123001337. The reversal of 12123001323 is 32310032121.

It is not a de Polignac number, because 12123001323 - 2¹ = 12123001321 is a prime.

It is a super-2 number, since 2×12123001323² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12123001296 and 12123001305.

It is not an unprimeable number, because it can be changed into a prime (12123001321) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 74833261 + ... + 74833422.

Almost surely, 2^12123001323 is an apocalyptic number.

12123001323 is a deficient number, since it is larger than the sum of its proper divisors (5986667441).

12123001323 is an equidigital number, since it uses as much as digits as its factorization.

12123001323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149666695 (or 149666686 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12123001323 its reverse (32310032121), we get a palindrome (44433033444).

The spelling of 12123001323 in words is "twelve billion, one hundred twenty-three million, one thousand, three hundred twenty-three".