11211200222121 has 12 divisors (see below), whose sum is σ = 16194347582400. Its totient is φ = 7473952694040.

The previous prime is 11211200222113. The next prime is 11211200222171. The reversal of 11211200222121 is 12122200211211.

11211200222121 is a `hidden beast` number, since 1 + 121 + 1 + 200 + 222 + 121 = 666.

It is not a de Polignac number, because 11211200222121 - 2³ = 11211200222113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11211200222094 and 11211200222103.

It is not an unprimeable number, because it can be changed into a prime (11211200222171) 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 11 ways as a sum of consecutive naturals, for example, 14672325 + ... + 15417506.

It is an arithmetic number, because the mean of its divisors is an integer number (1349528965200).

Almost surely, 2^{11211200222121} is an apocalyptic number.

It is an amenable number.

11211200222121 is a deficient number, since it is larger than the sum of its proper divisors (4983147360279).

11211200222121 is a wasteful number, since it uses less digits than its factorization.

11211200222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30131236 (or 30131233 counting only the distinct ones).

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

Adding to 11211200222121 its reverse (12122200211211), we get a palindrome (23333400433332).

The spelling of 11211200222121 in words is "eleven trillion, two hundred eleven billion, two hundred million, two hundred twenty-two thousand, one hundred twenty-one".