11212200112221 has 32 divisors (see below), whose sum is σ = 16833237811200. Its totient is φ = 7374781617840.

The previous prime is 11212200112187. The next prime is 11212200112247. The reversal of 11212200112221 is 12221100221211.

11212200112221 is a `hidden beast` number, since 112 + 1 + 220 + 0 + 112 + 221 = 666.

It is not a de Polignac number, because 11212200112221 - 2⁹ = 11212200111709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11212200112194 and 11212200112203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212200112621) 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, 993156 + ... + 4838466.

It is an arithmetic number, because the mean of its divisors is an integer number (526038681600).

Almost surely, 2^{11212200112221} is an apocalyptic number.

It is an amenable number.

11212200112221 is a deficient number, since it is larger than the sum of its proper divisors (5621037698979).

11212200112221 is a wasteful number, since it uses less digits than its factorization.

11212200112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3846766 (or 3846760 counting only the distinct ones).

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

Adding to 11212200112221 its reverse (12221100221211), we get a palindrome (23433300333432).

The spelling of 11212200112221 in words is "eleven trillion, two hundred twelve billion, two hundred million, one hundred twelve thousand, two hundred twenty-one".