12011212220211 has 24 divisors (see below), whose sum is σ = 18197550606144. Its totient is φ = 7625289404160.

The previous prime is 12011212220209. The next prime is 12011212220239. The reversal of 12011212220211 is 11202221211021.

12011212220211 is a `hidden beast` number, since 1 + 20 + 1 + 1 + 212 + 220 + 211 = 666.

It is not a de Polignac number, because 12011212220211 - 2¹ = 12011212220209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12011212220251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 383704630 + ... + 383735931.

It is an arithmetic number, because the mean of its divisors is an integer number (758231275256).

Almost surely, 2^{12011212220211} is an apocalyptic number.

12011212220211 is a deficient number, since it is larger than the sum of its proper divisors (6186338385933).

12011212220211 is a wasteful number, since it uses less digits than its factorization.

12011212220211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767440651 (or 767440648 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12011212220211 its reverse (11202221211021), we get a palindrome (23213433431232).

The spelling of 12011212220211 in words is "twelve trillion, eleven billion, two hundred twelve million, two hundred twenty thousand, two hundred eleven".