20121222020211 has 32 divisors (see below), whose sum is σ = 32785260856320. Its totient is φ = 12118837475232.

The previous prime is 20121222020203. The next prime is 20121222020213. The reversal of 20121222020211 is 11202022212102.

It is a happy number.

20121222020211 is a `hidden beast` number, since 2 + 0 + 1 + 212 + 220 + 20 + 211 = 666.

It is not a de Polignac number, because 20121222020211 - 2³ = 20121222020203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20121222020213) 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 in 31 ways as a sum of consecutive naturals, for example, 609828385 + ... + 609861378.

It is an arithmetic number, because the mean of its divisors is an integer number (1024539401760).

Almost surely, 2^{20121222020211} is an apocalyptic number.

20121222020211 is a deficient number, since it is larger than the sum of its proper divisors (12664038836109).

20121222020211 is a wasteful number, since it uses less digits than its factorization.

20121222020211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219689832 (or 1219689826 counting only the distinct ones).

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

Adding to 20121222020211 its reverse (11202022212102), we get a palindrome (31323244232313).

The spelling of 20121222020211 in words is "twenty trillion, one hundred twenty-one billion, two hundred twenty-two million, twenty thousand, two hundred eleven".