11210220112221 has 12 divisors (see below), whose sum is σ = 17438120174748. Its totient is φ = 6898596992064.

The previous prime is 11210220112213. The next prime is 11210220112291. The reversal of 11210220112221 is 12221102201211.

11210220112221 is a `hidden beast` number, since 1 + 1 + 210 + 220 + 1 + 12 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2147778180900 + 9062441931321 = 1465530^2 + 3010389^2 .

It is not a de Polignac number, because 11210220112221 - 2³ = 11210220112213 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11210220112194 and 11210220112203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11210220112291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47906923440 + ... + 47906923673.

It is an arithmetic number, because the mean of its divisors is an integer number (1453176681229).

Almost surely, 2^{11210220112221} is an apocalyptic number.

It is an amenable number.

11210220112221 is a deficient number, since it is larger than the sum of its proper divisors (6227900062527).

11210220112221 is a wasteful number, since it uses less digits than its factorization.

11210220112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95813847132 (or 95813847129 counting only the distinct ones).

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

Adding to 11210220112221 its reverse (12221102201211), we get a palindrome (23431322313432).

The spelling of 11210220112221 in words is "eleven trillion, two hundred ten billion, two hundred twenty million, one hundred twelve thousand, two hundred twenty-one".