12423205121 has 8 divisors (see below), whose sum is σ = 12720216960. Its totient is φ = 12126561552.

The previous prime is 12423205117. The next prime is 12423205127. The reversal of 12423205121 is 12150232421.

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 12423205121 - 2² = 12423205117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12423205127) 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, 23186 + ... + 159323.

It is an arithmetic number, because the mean of its divisors is an integer number (1590027120).

Almost surely, 2^12423205121 is an apocalyptic number.

It is an amenable number.

12423205121 is a deficient number, since it is larger than the sum of its proper divisors (297011839).

12423205121 is a wasteful number, since it uses less digits than its factorization.

12423205121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184135.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 12423205121 its reverse (12150232421), we get a palindrome (24573437542).

The spelling of 12423205121 in words is "twelve billion, four hundred twenty-three million, two hundred five thousand, one hundred twenty-one".