11212112201121 has 48 divisors (see below), whose sum is σ = 17737812892800. Its totient is φ = 6782380978176.

The previous prime is 11212112201119. The next prime is 11212112201123. The reversal of 11212112201121 is 12110221121211.

It is a happy number.

11212112201121 is a `hidden beast` number, since 1 + 121 + 211 + 220 + 112 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (11212112201119) and next prime (11212112201123).

It is not a de Polignac number, because 11212112201121 - 2¹ = 11212112201119 is a prime.

It is a super-2 number, since 2×11212112201121² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11212112201094 and 11212112201103.

It is not an unprimeable number, because it can be changed into a prime (11212112201123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 131618340 + ... + 131703498.

It is an arithmetic number, because the mean of its divisors is an integer number (369537768600).

Almost surely, 2^{11212112201121} is an apocalyptic number.

It is an amenable number.

11212112201121 is a deficient number, since it is larger than the sum of its proper divisors (6525700691679).

11212112201121 is a wasteful number, since it uses less digits than its factorization.

11212112201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104310 (or 104307 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11212112201121 its reverse (12110221121211), we get a palindrome (23322333322332).

The spelling of 11212112201121 in words is "eleven trillion, two hundred twelve billion, one hundred twelve million, two hundred one thousand, one hundred twenty-one".