12121331300000 has 144 divisors (see below), whose sum is σ = 32122389207384. Its totient is φ = 4475568000000.

The previous prime is 12121331299969. The next prime is 12121331300009. The reversal of 12121331300000 is 313312121.

It can be written as a sum of positive squares in 12 ways, for example, as 9825391164304 + 2295940135696 = 3134548^2 + 1515236^2 .

It is not an unprimeable number, because it can be changed into a prime (12121331300009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3362051 + ... + 5962050.

Almost surely, 2^{12121331300000} is an apocalyptic number.

12121331300000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12121331300000 is an abundant number, since it is smaller than the sum of its proper divisors (20001057907384).

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

12121331300000 is an frugal number, since it uses more digits than its factorization.

12121331300000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9324149 (or 9324121 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 12121331300000 its reverse (313312121), we get a palindrome (12121644612121).

The spelling of 12121331300000 in words is "twelve trillion, one hundred twenty-one billion, three hundred thirty-one million, three hundred thousand".