12020021221211 has 2 divisors, whose sum is σ = 12020021221212. Its totient is φ = 12020021221210.

The previous prime is 12020021221183. The next prime is 12020021221267. The reversal of 12020021221211 is 11212212002021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12020021221211 - 2¹⁴ = 12020021204827 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12020021221211.

It is not a weakly prime, because it can be changed into another prime (12020021221711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010010610605 + 6010010610606.

It is an arithmetic number, because the mean of its divisors is an integer number (6010010610606).

Almost surely, 2^{12020021221211} is an apocalyptic number.

12020021221211 is a deficient number, since it is larger than the sum of its proper divisors (1).

12020021221211 is an equidigital number, since it uses as much as digits as its factorization.

12020021221211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12020021221211 its reverse (11212212002021), we get a palindrome (23232233223232).

The spelling of 12020021221211 in words is "twelve trillion, twenty billion, twenty-one million, two hundred twenty-one thousand, two hundred eleven".