12001200121224 has 24 divisors (see below), whose sum is σ = 32503250328510. Its totient is φ = 4000400040384.

The previous prime is 12001200121201. The next prime is 12001200121271. The reversal of 12001200121224 is 42212100210021.

12001200121224 is a `hidden beast` number, since 1 + 200 + 120 + 0 + 121 + 224 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6202341202500 + 5798858918724 = 2490450^2 + 2408082^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12001200121197 and 12001200121206.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 83341667437 + ... + 83341667580.

Almost surely, 2^{12001200121224} is an apocalyptic number.

It is an amenable number.

12001200121224 is an abundant number, since it is smaller than the sum of its proper divisors (20502050207286).

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

12001200121224 is a wasteful number, since it uses less digits than its factorization.

12001200121224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166683335029 (or 166683335022 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12001200121224 its reverse (42212100210021), we get a palindrome (54213300331245).

The spelling of 12001200121224 in words is "twelve trillion, one billion, two hundred million, one hundred twenty-one thousand, two hundred twenty-four".