12423122012 has 24 divisors (see below), whose sum is σ = 24855462240. Its totient is φ = 5322219840.

The previous prime is 12423121999. The next prime is 12423122039. The reversal of 12423122012 is 21022132421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4187 + ... + 157682.

It is an arithmetic number, because the mean of its divisors is an integer number (1035644260).

Almost surely, 2^12423122012 is an apocalyptic number.

It is an amenable number.

12423122012 is an abundant number, since it is smaller than the sum of its proper divisors (12432340228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12423122012 is a wasteful number, since it uses less digits than its factorization.

12423122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164621 (or 164619 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12423122012 its reverse (21022132421), we get a palindrome (33445254433).

The spelling of 12423122012 in words is "twelve billion, four hundred twenty-three million, one hundred twenty-two thousand, twelve".