12020111201211 has 32 divisors (see below), whose sum is σ = 16476269921280. Its totient is φ = 7789111714944.

The previous prime is 12020111201191. The next prime is 12020111201213. The reversal of 12020111201211 is 11210211102021.

It is a happy number.

It is not a de Polignac number, because 12020111201211 - 2¹¹ = 12020111199163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12020111201213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1114102605 + ... + 1114113393.

It is an arithmetic number, because the mean of its divisors is an integer number (514883435040).

Almost surely, 2^{12020111201211} is an apocalyptic number.

12020111201211 is a deficient number, since it is larger than the sum of its proper divisors (4456158720069).

12020111201211 is a wasteful number, since it uses less digits than its factorization.

12020111201211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19835.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12020111201211 its reverse (11210211102021), we get a palindrome (23230322303232).

The spelling of 12020111201211 in words is "twelve trillion, twenty billion, one hundred eleven million, two hundred one thousand, two hundred eleven".