11212210220211 has 192 divisors, whose sum is σ = 22735308556800. Its totient is φ = 5368290681600.

The previous prime is 11212210220179. The next prime is 11212210220213. The reversal of 11212210220211 is 11202201221211.

11212210220211 is a `hidden beast` number, since 1 + 1 + 21 + 2 + 210 + 220 + 211 = 666.

It is not a de Polignac number, because 11212210220211 - 2⁵ = 11212210220179 is a prime.

It is a super-2 number, since 2×11212210220211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11212210220213) 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 191 ways as a sum of consecutive naturals, for example, 125009100 + ... + 125098758.

It is an arithmetic number, because the mean of its divisors is an integer number (118413065400).

Almost surely, 2^{11212210220211} is an apocalyptic number.

11212210220211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11212210220211 is an abundant number, since it is smaller than the sum of its proper divisors (11523098336589).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11212210220211 is a wasteful number, since it uses less digits than its factorization.

11212210220211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90367 (or 90354 counting only the distinct ones).

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

Adding to 11212210220211 its reverse (11202201221211), we get a palindrome (22414411441422).

The spelling of 11212210220211 in words is "eleven trillion, two hundred twelve billion, two hundred ten million, two hundred twenty thousand, two hundred eleven".