12121021122011 has 2 divisors, whose sum is σ = 12121021122012. Its totient is φ = 12121021122010.

The previous prime is 12121021121969. The next prime is 12121021122037. The reversal of 12121021122011 is 11022112012121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12121021122011 - 2⁶ = 12121021121947 is a prime.

It is not a weakly prime, because it can be changed into another prime (12121021122311) 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 as a sum of consecutive naturals, namely, 6060510561005 + 6060510561006.

It is an arithmetic number, because the mean of its divisors is an integer number (6060510561006).

Almost surely, 2^{12121021122011} is an apocalyptic number.

12121021122011 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121021122011 is an equidigital number, since it uses as much as digits as its factorization.

12121021122011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12121021122011 its reverse (11022112012121), we get a palindrome (23143133134132).

The spelling of 12121021122011 in words is "twelve trillion, one hundred twenty-one billion, twenty-one million, one hundred twenty-two thousand, eleven".