12121200133321 has 16 divisors (see below), whose sum is σ = 12298240546560. Its totient is φ = 11945523744000.

The previous prime is 12121200133283. The next prime is 12121200133337. The reversal of 12121200133321 is 12333100212121.

It is a cyclic number.

It is not a de Polignac number, because 12121200133321 - 2¹⁵ = 12121200100553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12121200133292 and 12121200133301.

It is not an unprimeable number, because it can be changed into a prime (12121200133381) 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 15 ways as a sum of consecutive naturals, for example, 19121766 + ... + 19745488.

It is an arithmetic number, because the mean of its divisors is an integer number (768640034160).

Almost surely, 2^{12121200133321} is an apocalyptic number.

It is an amenable number.

12121200133321 is a deficient number, since it is larger than the sum of its proper divisors (177040413239).

12121200133321 is a wasteful number, since it uses less digits than its factorization.

12121200133321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624816.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 12121200133321 its reverse (12333100212121), we get a palindrome (24454300345442).

The spelling of 12121200133321 in words is "twelve trillion, one hundred twenty-one billion, two hundred million, one hundred thirty-three thousand, three hundred twenty-one".