12020220122211 has 72 divisors (see below), whose sum is σ = 20267960993280. Its totient is φ = 6844657601376.

The previous prime is 12020220122159. The next prime is 12020220122219. The reversal of 12020220122211 is 11222102202021.

It is a happy number.

It is not a de Polignac number, because 12020220122211 - 2⁹ = 12020220121699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12020220122219) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 747192810 + ... + 747208896.

It is an arithmetic number, because the mean of its divisors is an integer number (281499458240).

Almost surely, 2^{12020220122211} is an apocalyptic number.

12020220122211 is a deficient number, since it is larger than the sum of its proper divisors (8247740871069).

12020220122211 is a wasteful number, since it uses less digits than its factorization.

12020220122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21933 (or 21923 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12020220122211 its reverse (11222102202021), we get a palindrome (23242322324232).

The spelling of 12020220122211 in words is "twelve trillion, twenty billion, two hundred twenty million, one hundred twenty-two thousand, two hundred eleven".