12001423005012 has 48 divisors (see below), whose sum is σ = 32004235855872. Its totient is φ = 3428930732640.

The previous prime is 12001423004941. The next prime is 12001423005059. The reversal of 12001423005012 is 21050032410021.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 12001423005012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5389153 + ... + 7283255.

It is an arithmetic number, because the mean of its divisors is an integer number (666754913664).

Almost surely, 2^{12001423005012} is an apocalyptic number.

12001423005012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12001423005012 is an abundant number, since it is smaller than the sum of its proper divisors (20002812850860).

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

12001423005012 is a wasteful number, since it uses less digits than its factorization.

12001423005012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969548 (or 1969546 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 12001423005012 its reverse (21050032410021), we get a palindrome (33051455415033).

The spelling of 12001423005012 in words is "twelve trillion, one billion, four hundred twenty-three million, five thousand, twelve".