1212012221011 has 2 divisors, whose sum is σ = 1212012221012. Its totient is φ = 1212012221010.

The previous prime is 1212012220943. The next prime is 1212012221041. The reversal of 1212012221011 is 1101222102121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212012221011 - 2⁹ = 1212012220499 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212012221041) 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, 606006110505 + 606006110506.

It is an arithmetic number, because the mean of its divisors is an integer number (606006110506).

Almost surely, 2^{1212012221011} is an apocalyptic number.

1212012221011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212012221011 is an equidigital number, since it uses as much as digits as its factorization.

1212012221011 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 16.

Adding to 1212012221011 its reverse (1101222102121), we get a palindrome (2313234323132).

The spelling of 1212012221011 in words is "one trillion, two hundred twelve billion, twelve million, two hundred twenty-one thousand, eleven".