12012200121504 has 96 divisors (see below), whose sum is σ = 34550109328896. Its totient is φ = 3624025061120.

The previous prime is 12012200121503. The next prime is 12012200121521. The reversal of 12012200121504 is 40512100221021.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (12012200121503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24815772 + ... + 25295195.

It is an arithmetic number, because the mean of its divisors is an integer number (359896972176).

Almost surely, 2^{12012200121504} is an apocalyptic number.

It is an amenable number.

12012200121504 is an abundant number, since it is smaller than the sum of its proper divisors (22537909207392).

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

12012200121504 is a wasteful number, since it uses less digits than its factorization.

12012200121504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50111218 (or 50111210 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 12012200121504 its reverse (40512100221021), we get a palindrome (52524300342525).

The spelling of 12012200121504 in words is "twelve trillion, twelve billion, two hundred million, one hundred twenty-one thousand, five hundred four".