12121002120011 has 4 divisors (see below), whose sum is σ = 12154029374112. Its totient is φ = 12087974865912.

The previous prime is 12121002119987. The next prime is 12121002120013. The reversal of 12121002120011 is 11002120012121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12121002120011 is a prime.

It is a super-2 number, since 2×12121002120011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12121002120013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16513626500 + ... + 16513627233.

It is an arithmetic number, because the mean of its divisors is an integer number (3038507343528).

Almost surely, 2^{12121002120011} is an apocalyptic number.

12121002120011 is a deficient number, since it is larger than the sum of its proper divisors (33027254101).

12121002120011 is an equidigital number, since it uses as much as digits as its factorization.

12121002120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33027254100.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12121002120011 its reverse (11002120012121), we get a palindrome (23123122132132).

The spelling of 12121002120011 in words is "twelve trillion, one hundred twenty-one billion, two million, one hundred twenty thousand, eleven".