12121222101011 has 2 divisors, whose sum is σ = 12121222101012. Its totient is φ = 12121222101010.

The previous prime is 12121222100989. The next prime is 12121222101211. The reversal of 12121222101011 is 11010122212121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12121222101011 is a prime.

It is not a weakly prime, because it can be changed into another prime (12121222101211) 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 as a sum of consecutive naturals, namely, 6060611050505 + 6060611050506.

It is an arithmetic number, because the mean of its divisors is an integer number (6060611050506).

Almost surely, 2^{12121222101011} is an apocalyptic number.

12121222101011 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121222101011 is an equidigital number, since it uses as much as digits as its factorization.

12121222101011 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 12121222101011 its reverse (11010122212121), we get a palindrome (23131344313132).

It can be divided in two parts, 1212122 and 2101011, that added together give a palindrome (3313133).

The spelling of 12121222101011 in words is "twelve trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred one thousand, eleven".