12121200231200 has 72 divisors (see below), whose sum is σ = 29697706889172. Its totient is φ = 4830976465920.

The previous prime is 12121200231193. The next prime is 12121200231209. The reversal of 12121200231200 is 213200212121.

It can be written as a sum of positive squares in 6 ways, for example, as 2015184663184 + 10106015568016 = 1419572^2 + 3178996^2 .

It is not an unprimeable number, because it can be changed into a prime (12121200231209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27127679 + ... + 27570878.

Almost surely, 2^{12121200231200} is an apocalyptic number.

12121200231200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12121200231200 is an abundant number, since it is smaller than the sum of its proper divisors (17576506657972).

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

12121200231200 is a wasteful number, since it uses less digits than its factorization.

12121200231200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54698854 (or 54698841 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12121200231200 its reverse (213200212121), we get a palindrome (12334400443321).

The spelling of 12121200231200 in words is "twelve trillion, one hundred twenty-one billion, two hundred million, two hundred thirty-one thousand, two hundred".